\f9 - 12 Simplify - Leave in Rational form 9. g(x) = 12x + 8 10. g(x) = x -2 f (x) = 4x - 2 f (x) = 3x-5 Find 9 Find (g . f) 11. f(x) = x+3 12. f(x) = 12x3 + 15x2 - 6x g(x) = x2 +5 g(x) = 3x Find (f . g) Find 13 -16 Evaluate - Simplify 13. g(x) = x3 + 6x 14. h(x) = -8x + 1 h(x) = -5x2 - 4x g(x) = 7x2 +2 Find ( ) (-1) Find (f . g) (3) 15. g(x) = x2 + 7x 16. g(x) = 12x + 4 f(x) = -5x2 +4 f (x) = -8x2 -6 Find (#) (3) Find (f . 9)(-1)For 17 -18 Evaluate - Simplify f (x) = 2x - 1, g(x) =2x, and h(x) = x2+3 17. f(g(-3)) 18. (goh)(12) = 19. If f(x) = -2x - 9 and g(x) = vx - 9 find (fog) (18) 20. If f(x) = -2x + 1 and g(x) = vx2 - 5 find (gof) (4) 21-25 Write the function and solve the question(s) asked. 21 Brentwood Enterprises went on the market Tuesday with a price of $6.59. For the first four days, the value of the stock increases on average by 21% per day. If this trend continues, how many days will it take for the stock to be worth at least $25.00? f ( x ) = days22 Sarah has as a 90 year old wind-up street car that is still working. Her parents had it appraised back in 1959 and was valued than at $55.00. The appraiser said that they could expect to see a 5% increase per year if they wanted to keep it for a while longer. About how much could Sarah expect her street car toy to be worth in 2019? C(O)= In 2019 $ 23 You received a coupon for $10 off of a pair of jeans from Barry's Best Blue Jeans. When you get to the store you see the jeans you love are on sale - 30% off. Write a function f (x) = for just the coupon sale. Next write a function, g (x) = for just the 25% off. Now the question is which is the better buy, f(g(x)) or g(f(x)). f (x) = 9(x) = f(g(x)) = g(f (x) ) The best deal is 24 During the super summer sale at Marvelous Mike's Music Mart he is selling all drum kits for 20% off. All preferred customers will also receive an addition 15 % off. Write the composite function to represent the final cost of a drum kit, for his preferred customers. What will the new price be for his preferred customers, if the original price was $349.99 New price for preferred customers will be $Put the following polynomials into standard form. 1 3a2 + 2a - 4a3 + 5 -> 2 6b2 + 264 - 5+b-> 3 8c -4-503 ) 4 3d2 + 2d - 4d3 + 5 -> Simply and put into standard form. 5 (6x2 - 7x +8) + (-4x2 +9x -5) = 6 (4m2 - m + 2) - (-3m + 10m2 - 4) = 7 (g - 3g2) - (-2g + 3g2 + 4) = 8 (-4y + y2 + 9) + (3y2 - by + 13 - 9) = 9 (2a3 - 5a2 + 8) - (4a - a3 -3) = 10 (-8k - 12) + (4 +9k) - (3k2 -8) =11 Find the measure of the third side of this triangle with a perimeter of 4x2 + 4x + 3. 4x9 2 12 Find the measure of the fourth side of this trapezoid with a perimeter 31:33:2 + 12x + 7. 2172 +3