Math Quiz

An equation is shown. 3x - 7 = 2(x + 3) What value of x makes the equation true?

• -4

• -1

• 10

• 13

Sandra makes necklaces and sells them at a school craft fair. She uses the equation P = 7.5n - (2.25n + 15) to determine her total profit, in dollars, at the fair when n necklaces are sold. Based on this equation, how much does she charge for each necklace?

• $2.25

• $7.50

• $15.00

• $17.25

Tags

CCSS.8.EE.C.7B

A home repair company charges a flat fee of $125 plus an additional $35 per hour, h, a home repair job takes. The company expects to make at least $500 for one such home repair job. Which inequality gives all the possible numbers of hours, rounded to the nearest tenth, the company expects the job to take so that the company makes at least $500?

• h ≤ 10.7

• h ≥ 10.7

• h ≤ 17.9

• h ≥ 17.9

The formula V = πr²h can be used to find the volume, V, of a cylinder with a radius of r and a height of h. What equation will give the height, h, of a cylinder that has a known volume and radius?

• h = πr²V

• h = Vπ / r²

• h = Vr² / π

• h = V / πr²

Tags

CCSS.HSA.CED.A.4

What property justifies the first step of solving the equation from the original equation 4x + 7 = 8x - 7 to 4x + 7 + 7 = 8x?

• Division property of equality

• Subtraction property of equality

• Addition property of equality

• Multiplication property of equality

Which property justifies the second step of solving the equation from 4x + 14 = 8x to 4x + 14 - 4x = 8x - 4x?

• Division property of equality

• Subtraction property of equality

• Addition property of equality

• Multiplication property of equality

What property justifies the third step of solving the equation from 14 = 4x to 14/4 = x?

• Division property of equality

• Subtraction property of equality

• Addition property of equality

• Multiplication property of equality

Tags

CCSS.HSA.REI.A.1

What does the term 4(75) represent in the expression for the total daily expenses for Sheila's bakery to make x pies?

• The amount of money Sheila must pay her employees each day

• The number of pies Sheila makes in a day

• The total cost of expenses for a day

• The amount of money customers pay per pie

Tags

CCSS.HSA-SSE.A.1A

What does the term $0.50x represent in the expression for the total daily expenses for Sheila's bakery to make x pies?

• The cost of ingredients per pie

• The daily rate paid to one employee

• The total daily income from selling pies

• The total cost of salaries for all employees

Tags

CCSS.HSF.LE.B.5

Which function has a greater rate of change than the function y = 5.6x + 7?

• y = -2x - 10

• y = 7/3x - 2

• The function represented by the graph

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9