STAAR Review 4

Which expression is equivalent to m² - 13m - 30

• (m-15)(m+2)

• (m-10)(m-3)

• (m+15)(m-2)

• (m+10)(m+3)

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

The line graphed on the grid represents the first of two equations in a system of linear equations.

If the graph of the second equation in the system passes through the points (-12, 20) and (4, 12), which statement is true?

• The only solution to the system is (10,5).

• The only solution to the system is (0,14).

• The system has no solution.

• The system has an infinite number of solutions.

Tags

CCSS.8.EE.C.8B

What is the domain of f(x) = 9 - x²?

• f(x) ≥ 9

• All real numbers

• -3 ≤ x ≤ 3

• x ≤ 9

Tags

CCSS.HSF.IF.B.5

A student used f(x) = 5.00(1.012)^x to show how the balance in a savings account will increase over time. What does the 5.00 represent?

• The interest the savings account earned the first year.

• The annual interest rate of the savings account.

• The number of years the savings account has earned interest.

• The starting balance of the savings account.

Tags

CCSS.HSF.LE.B.5

The graph of a function is shown on the grid.

Which ordered pair best represents the location of the y-intercept?

• 
• 
• 
• 

Tags

CCSS.HSA.REI.D.10

Researchers in Antarctica discovered a warm sea current under a glacier that is causing the glacier to melt. The ice shelf of the glacier had a thickness of approximately 450 m when it was first discovered. The thickness of the ice shelf is decreasing at an average rate of 0.06 m per day.

Which function can be used to find the thickness of the ice shelf in meters x days since the discovery?

• t(x) = 450 - 0.06x

• t(x) = -0.06(x + 450)

• t(x) = 450 + 0.06x

• t(x) = 0.06(x + 450)

Tags

CCSS.HSF-BF.A.1A

• 0

• 3

• -3

• 1/3

Tags

CCSS.8.EE.A.2

The amount of fertilizer in a landscaping company's warehouse decreases at a rate of 3% per week. The amount of fertilizer in the warehouse was originally 78,000 cubic yards.

Which function models the amount of fertilizer in cubic yards left after w weeks?

• f(w) = 0.97(78,000)^w

• f(w) = 1.03(78,000)^w

• f(w) = 78,000(0.97)^w

• f(w) = 78,000(1.03)w

Tags

CCSS.HSF.LE.A.2

What is the equation of the line that passes through the point (-2,7) and has a slope of zero?

• x = 7

• y = -2

• x = -2

• y = 7

Tags

CCSS.HSA.REI.D.10

CCSS.HSG.GPE.B.5