Proportions
The constant of proportionality in the equation
y = 13x
13
What is the sales tax on a $18.50 item if the tax rate is 6% ?
$18.50 * 0.06 = $1.11
Simplify
2(6 - 8y)
12-16y
6/8 as a decimal
0.75
A rollercoaster ascends 30 feet into the air then descends 11 feet. Write and solve the expression
30 - 11 = 19 feet
The weight of 3 eggs are 120 grams. Assuming the 3 eggs are all the same weight, the constant of proportionality is?
40 grams
What is the sales tax on a $45.75 jacket if the tax rate is 8% ?
$45.75 * 0.08 = $3.66
Simplify
14d - 5 + 2d
16d - 5
How do you turn a decimal into a percent
Multiply by 100
A rollercoaster plunges down 85 feet then descends another 12 feet. Write and solve the expression
-85 - 12 = -97
In a field, 15 acres of land produced 300 bushels of apples. The rate that represents the number of bushels per acre is
20:1
What is the total price of a $9.60 snack if the tax rate is 5%?
$9.60 * 0.05 = 0.48
$9.60 + 0.48 = $10.08
Evaluate
-6 + 15 - (-3) + 11
23
Which of the following fractions will give you a repeating decimal?
2/5, 1/4, 1/3, or 3/6
1/3
The temperature at noon was -7 degrees. By 8 p.m. the temperature decreased by 4.5 degrees. What was the temperature at 8 p.m.
-11.5 degrees
A 7-ounce box of pasta contains 35 jumbo shells. The number of jumbo shells in a 15-ounce box is
75 shells
What is the total price of a $22.40 video game if the tax rate is 7% ?
$22.40 * 0.07 = 1.57
$22.40 + 1.57 = $23.97
Evaluate if e = 5 and f = 3
3e + 4f
27
The relation of 20 squares to 100 can be expressed in many ways. Which of the following is NOT a way to express the relationship?
20/100, 1/5, 20%, or 0.02
0.02
In 2009 a bag of Takis was $3.75 In the following years the price increased by 0.30, increased another 0.12, then decreased 0.27. What is the total price for Takis now?
$3.90
A person is saving money at a constant rate. Week 2 = $22, Week 4 = $44, Week 6 = $66, Week 8 = $88. How much is this person saving per week?
$11/week
What is the total price of a $63.20 backpack if the tax rate is 6.5% ?
63.20 * 0.065 = 4.11
$63.20 + $4.11 = $67.31
Simplify
t + 4 + 3 - 5.2t
7 - 4.2t or -4.2t + 7
Order the set of numbers from LEAST to GREATEST
0.35, 2/5, 1/3, 3/6
1/3, 0.35, 2/5, 3/6
A granola bar contains 160 calories in 2/3 of a serving. Yogurt contains 130 calories in 1/4 of a serving. Which food has fewer calories per serving?
Granola; 240 calories per serving