Project 800

800.M.1

What is 10% of 470?

• 47
• 37
• 57
• 67

Answer explanation

800.M.1a

What is 15% of 320?

• 48

• 42

• 32

• 67

Answer explanation

800.M.1b

Oliver is saving money to buy a new video game. He has saved 470 dollars so far. What is 10% of his savings?

• 47

• 57

• 37

• 67

Answer explanation

800.M.2

Which equation has the same solution as the given equation?

4x+6=18

• 8x - 2 = 14
• 4x - 6 = 6
• 2x + 3 = 9
• 4x + 6 = 12

Answer explanation

1) Solve for x by subtracting 6 from both sides because it's the inverse of addition

2) Divide both sides by 4 because it's the inverse of multiplication (4x means 4 is being multiplied by x)

3) Evaluate the answer choices to see which equations are true when x=3

800.M.2a

James is buying apples.

He finds that 4 apples and a $6 packaging fee cost $18 in total.

Which equation represents the cost of just the apples?

• 4x + 3 = 18

• 4x + 6 = 12

• 4x = 12

• 4x = 18

• 6x + 9 = 18

Answer explanation

800.M.2b

James is buying apples. Each apple costs $4, and he has a $6 discount. If his total bill is $18, how many apples did he buy?

• 6
• 5
• 4
• 7
• 8

Answer explanation

800.M.3

The total cost, in dollars, to rent a surfboard consists of a $25 service fee and a $10 per hour rental fee. A person rents a surfboard for t hours and intends to spend a maximum of $75 to rent the surfboard. Which inequality represents this situation?

• 25 + 10t ≤ 75
• 25 + 10t < 75
• 10t - 25 ≤ 75
• 10t + 25 = 75
• 25 + 10t ≥ 75

Answer explanation

800.M.3a

The total cost, in dollars, to rent a bicycle consists of a $20 service fee and a $15 per hour rental fee. A person rents a bicycle for h hours and intends to spend a maximum of $95 to rent the bicycle. Which inequality represents this situation?

• 20 + 15h ≤ 95

• 20 + 15h < 95

• 15h - 20 ≤ 95

• 15h + 20 = 95

• 20 + 15h ≥ 95

Answer explanation

800.M.3b

The total cost, in dollars, to rent a kayak consists of a $25 service fee and a $10 per hour rental fee. A person rents a kayak for h hours and intends to spend a maximum of $85 to rent the kayak. Which inequality represents this situation?

• 25 + 10h ≤ 85

• 25 + 10h < 85

• 10h - 25 ≤ 85

• 10h + 25 = 85

• 25 + 10h ≥ 85

Answer explanation

• -5
• -3
• 3
• 5
• 4

Answer explanation