C. Directions: Determine which of the following relations is a function. Write Fif it is function and R if it is just merely. relation. S = {(3,1), (2,1), (1,1)} Answer: 2. M = {-2,0), (-3,1), (-4,2), (-3,3)} Answer: 3. A = {(4,2), (8,4), (16,8)} Answer: F R = {(-5,-6), (-5, -12), (-5,-15)} Answer: 5. T = {(10,-5), (15,0), (20,5)} Answer: 1. 4.

4. Multiply the following signed numbers: a. (-42x)(+2x) = b. (+8x)(-4x)(-3x) = c. (+7)(-4)(-4) = d. (+10)(-2)(-2)(+4) =

then A-1 = A -2 00 01 3 -5 00 7 4 1 20 4 1 1

what about #23

A restaurant worker logs in the following hours for one week: 5 1/4, 6 1/3, 7 3/8, 11 1/2, and 9 3/4. How many hours did this person work this week?

Why?

One third of the cars available for sale in a dealership are used cars. If there are 20 new cars, how many cars are there in the dealership?

To make an A in Prof. Broussard’s math class, a student must have an average of at least 90 on five tests. Andy has made 91, 83, 89, and 94 on the first four tests. What must he make on the fifth test to get an A?

Arrange 2/3, -0.645, 3/5, -0.64, and 4/9 in order from smallest to largest.