8:06 55 Done Test 2 Review - Ch. 7 & 8-1.docx 2) Use this model to determine the account executive's compensation for $95,000 in monthly sales. 32. Is the graph of V= 3x perpendicular to the graph of y = - 33. Are the graph of 4x-5y =3 and 4x+5y=-3 parallel? 34. Find the equation of the line containing the point P(2,3) and parallel to the graph of 4x+ y=-1 . A - 3Done Test 2 Review - Ch. 7 & 8-1.docx ['1] 30. A manufacturer of graphing calculators has determined that 13,500 calculators per week will be sold at a price of $98. At a price of $94, it is estimated that 15,180 calculators would be sold. 1) Determine a linear function that will predict the number of calculators y that would be sold at a given price x. 2) Use this model to predict the number of calculators that would be sold each week at a price of $75. 31. An account executive receives a base salary plus a commission. On $40,000 in monthly sales, the account executive receives $6000. On $60,000 in monthly sales, the account executive receives $7000. 1) Determine a linear function that will yield the compensation y of the sales executive for a given amount of monthly sales x. 2) Use this model to determine the account executive's compensation for $95,000 in monthly sales. __X+ 32. Is the graph of y _ 8 5 perpendicular to the graph of S 8 y = 8 am] 3x l 14. Solve and write the solution in set builder notation and in interval notation. .\\ + 4 a 5 mid Xx 2 40 Done Test 2 Review - Ch. 7 & 8-1.docx ['1] 20. Determine whether the set of ordered pairs is a function. Then, state the domain and range. 1) {(0, 0), (2, 0): (57 0), (8, 0), (9, 0)} 2) {(1, 7), (6, 3)7 (8, 2), (1, 8), (67 1)} 21. Given F(x) : x2 + 2x 7 3, evaluate F63) 22. What is the domain of the function? Write the answer in set- builder notation. l 1) gm ' E 2) fm = 3x 5 23' f(\\')=.\\':4.\\'+1 1) Graph the function. First plot the ordered pairs of the function for the given values of the independent variable. Then connect the points to form the graph. x=5, 4, 3, 2, 1, 0,1 2) Estimate the domain and range from the graph. Write the answers in setbuilder notation. Done Test 2 Review - Ch. 7 & 8-1.docx ['1] Ch. 7 l. Solve. 5(6 2_\\')+4_1' = 6 2 Solve. Z ___l 3 6 2 3. Solve. 7+3ll+2(2x3)]:6(,\\-+7) 4. Solve for x. 9v+4y=lx 5. Translate into a equation and solve. The sum of two numbers is six. Two less than three times the smaller is equal to the larger. Find the numbers. 8:04 55 Done Test 2 Review - Ch. 7 & 8-1.docx 15. Solve. 13x + 6/+3=8 16. Solve. 1x +71=-2 17. Solve and write the solution in set builder notation and in interval notation. 13-5x/ 27 18. Solve and write the solution in set builder notation and in interval notation. 16-5x| s16 Ch. 8 19. Is (-3, -4) a solution to 2x - 3y = 6?Done Test 2 Review - Ch. 7 & 8-1.docx 6. The cost to replace a water pump in a sports car was $673. This included $495 for the water pump and $89 per hour for labor. How many hours of labor were required to replace the water pump? 7. The manager of a farmer's market has 100 lb of grain that costs $1.80 per pound. HOW many pounds of meal costing $0.80 per pound should be mixed with the 100 lb of grain to produce a mixture that costs $1.30 per pound? 8. A passenger train leaves a train depot 1 hour after a freight train leaves the same depot. The freight train is traveling 26 mph slower that the passenger train. Find the rate of each train if the passenger train overtakes the freight train in 2 hours. 9. Two small planes start from the same point and fly in opposite directions. The first plane is ying 50 mph slower than the second plane. In 3 hours, the planes are 780 mi apart. Find the rate of each plane. 10. Solve and write the solution in set builder notation and in interval notation. 92(.\\'+4)56+Z(3\\'+2) 8:05 55 Done Test 2 Review - Ch. 7 & 8-1.docx 28. One day, in midstate New Hampshire, the temperature at 6 a.m. was 40 F. At 2 p.m. on the same day, the temperature was 72 F. Find the average rate of change in temperature per hour. 29. Find the equation of the line that contains the given point and has the given slope. 1) P(-1, 13), m =-9 2) P(-1, -3), m = = 3) P(2, -3), m =0 4) P(-2,5), m is undefined