Unit 4 (4.1-4.8) MATH

Jeremy makes $4.70 every time he mows a lawn but it costs him $6.80 to refill his lawn mower with gas. If Jeremy mows 5 lawns using 3 tanks of gas, how much did he profit?

• $2.50
• $4.20
• $5.80
• $3.10

Sophie pays m dollars to rent a car for the weekend. On the drive home, she buys $25 worth of gasoline. Her friend Melody pays for one-half the cost of the car rental only. Write an expression you could use to determine how much Sophie spent.

• m / 2 + 25
• m * 2 + 25
• m + 25
• m / 2 - 25

Select all of the situations which can be represented by the expression 25.75x+10.

• Carol has $25.75. She earns $10.00 for each car that she washes.

• Max has $10.00. He earns $25.75 for every lawn that he mows.

• Jin buys x postcards for $25.75 each and x keychains for $10.00 each.

• Sasha sells a scarf for $10.00 and x jackets for $25.75 each.

• Jon buys 10 toy cars for $25.75 each.

Angeline bought s yards of satin fabric priced at $8.09 per yard, and c yards of cotton fabric priced at $3.79 per yard. What expression could you use to determine the total cost of the fabric? If she bought 5 yards of satin fabric and 8 yards of cotton fabric, how much did Angeline spend in all?

• $56.45
• $78.77
• $92.33
• $70.18

Leon has a container filled with 450 grams of tea leaves. Each morning, he uses 3 grams to make a cup of tea. Write an expression to represent the amount of tea leaves remaining after x days.

• 450 + 3x
• 450 / 3x
• 450 - 3x
• 450 * 3x

Use properties of operations to write an expression equivalent to p/6+(q+8).

• p/6 + q + 8
• p/6 + q + 8 * 4
• p/6 + q + 8 - 3
• p/6 + q + 8 + 2

What number makes the expressions equivalent? 1/2(-1.4m+0.4)=m+0.2

• -1
• 1
• 2
• 0

Use the Commutative Property to write an expression equivalent to -5d+1/2.

• -5d - 1/2
• -5d + 1/2
• 1/2 - 5d
• 1/2d - 5

Select all the expressions which are equivalent to -4/3p-2/5.

• -4/3p + 2/5

• -2/5 - 4/3p

• 4/3p - 2/5

• -4/3p + (2/5)

Write an equivalent expression that shows the perimeter of a square box as four times the side length of the box if the perimeter is 12x+32.

• 4x + 8
• 6x + 16
• 2x + 4
• 3x + 8