7th Spiral A
Matt earned $28,500 last year. He paid $8,265 for rent. What percent of his earnings did Matt pay for rent?
29%
The quantities x and y are proportional. What is the missing value in the table?
45
Classify the real number (natural, whole, integer, rational, irrational).
natural, whole, integer, rational
The depth of Nathans binder is 2 5/12 inches. What is this measurement as a decimal?
2.416 repeating
The Williams budget 1/4 for rent and 1/3 for food. How much of their budget is left?
5/12
Which of the following expressions represents the distance between −13 and −4 on a number line?
a) |−13−(−4)|
b) |−13−4|
c) |−13+(−4)|
d) |13+4|
A
Which equation does not represent a function?
a) y = −3x
b) −5y = 4x
c) y = 3x
d) x2 = y2
B
Monica teaches piano lessons. She charges $35 for a lesson. If the input is the number of lessons Monica teaches, write a rule for the amount she earns in dollars?
y = 35x
For a school project, Lizzy is making a model of the Empire State Building. She is using a scale of 1 cm:8 ft. The Empire State Building is 1,252 feet tall. How tall is her model?
156.5cm
A cereal box is 9 inches by 2.5 inches by 10 inches. What is the volume of the box?
225 in3
Tell whether the triangles are similar. Explain.
Yes they are similar because they have the same angle measurements
Jasmine went shopping and spent $56 on accessories and clothes. She spent $18 more on clothes than on accessories. Write and solve a system of equations to find how much she spent on each.
x + y = 56
y - x = 18
clothes = $37
food = $19
The ShowMe Movie Theater is showing 12 movies. Each movie is shown at five different times during the day. How many choices of movies and
showtimes does Bart have?
60 choices
Simplify
6𝑥(𝑥2−2𝑥+1/2)
6𝑥3−12𝑥2+3𝑥
What is the relative frequency of students who do not have a pet?
18.4%
What type of association is shown in the scatter plot?
a) a negative linear association
b) a negative nonlinear association
c) a positive linear association
d) no association
C) A positive linear association
In order for a class trip to be scheduled, at least 30 students must sign up. So far, 23 students have signed up.
Write and solve an inequality to find the least number of students that must sign up in order for the class trip to be scheduled.
23 + 𝑥 ≥ 30
at least 7 students
A bargain bin contains hip-hop and jazz CDs. There are 80 CDs in the bin. Choosing a jazz CD and not choosing a jazz CD have the same number of favorable outcomes. How many jazz CDs are in the bin?
40 jazz CDs
Solve the system by substitution.
5x − 2y = 10
y = 3x − 4
x = -2
y = -10
Prudence is creating a garden in her backyard. She wants it to be the shape of an equilateral triangle with sides of length 20 feet. What will be the area of this triangular garden? Round your answer to the nearest whole foot.
173 square feet