USING PROBLEM SOLVING

1.Suppose your grades on three math exams are 80, 93, and 91. What grade doyou need on your next exam to have at least a 90 average on the fourexams?

2.In the Computer Programming department there were originally 81groups of 26students.The students were regrouped so that each group had 18 students, how many students will be left without a group?

3.Solve the following using either substitution or elimination methods.

a) 4x + 4y = 64

5x-2y=24

b. 3x+4y = 24

4x+3y=22

4.Solve for x for each of the following questions:

a 6-3(x-2) = x

b.3 (3x+12) = -( 18+ 9x)

c.x/(x+7)=2

5.Aaron is 5 years younger than Ron. Four years later, Ron will be twice as old as Aaron. Find their present ages.

6.On Monday, 279 students went on a trip to the zoo. All 5 buses were filled and 9 students had to travel in cars. How many students were in each bus?

7.At the recent Sheridan Bruins game1000 tickets were sold. Tickets for students without ID $8.50, tickets for students with ID was $4.50 and a total of $7300 was collected. How many tickets of each kind were sold? .