Math Operational Properties

Evaluate the expression for the given variable: 8q+4   when q=3

• 15

• 24

• 28

• 20

• 8

Evaluate the expression for the given value of the variable: 2.5x+4.8y   x=3  y=5

• 28.2

• 31.5

• 34.5

• 37.5

The cost to rent a pair of skis per hour (a) is $35.50 per hour and the cost to rent a snowboard per hour (b) is $42.15 per hour. Use the expression 35.50a + 42.15b to determine how much it would cost to rent a pair of skis for 2 1/2 hours and a snowboard for 4 3/4 hours. Round to the nearest cent.

• $288.96

• $296.35

• $304.57

• $323.89

An automatic fish feeder dispenses  3.5 ounces food for the fish every day at a certain time. What expression can you use to figure out how much food is dispensed after "d" days?

Write an expression that represents the height of an animal who starts at 2 feet tall and grows 1.5 feet per year (y).

Which expression can be used to determine the total weight of (b) basketballs that weigh 22 ounces each and (s) soccer balls that weigh 25 ounces each?

• 22b + 25s

• 25b + 22s

• 47(b + s)

• 47sb

How many terms are in this expression: 4x + 3y - 8 + 24

• 1

• 2

• 3

• 4

What is the coefficient of the second term in this expression: 8x +4y -30z + 55

• -30z

• 4y

• 4

• -30

Are there any like terms in this expression? Identify the like terms:           

2a + 4y + 6a + 10z - 5

• 5 and 10

• All of the terms except 5

• none of them

• 2a and 6a