STAAR Released Algebra

The value of y varies directly with x. If x = 3, then y = 21. What is the value of x when y = 105?

• 3/5

• 2/3

• 7

• 15

Which expression is equivalent to x^2 - 17x - 60?

• (x - 20)(x + 3)

• (x - 5)(x - 12)

• (x - 20)(x - 3)

• (x + 5)(x - 12)

The graph of quadratic function p is shown on the grid. If f(x) = x^2 and p(x) = k(x) + n, what is the value of n? Record your answer and fill in the bubbles on your answer document.

Two customers went to a post office to buy postcards and large envelopes. Each postcard costs the same amount, and each large envelope costs the same amount. The first customer paid $12 for 14 postcards and 5 large envelopes. The second customer paid $24.80 for 10 postcards and 15 large envelopes. What was the cost in dollars of each large envelope?

• $1.42

• $0.35

• $1.15

• $0.63

Tags

CCSS.8.EE.C.8C

Given f(x) = (1/3)(4 - x)^2, what is the value of f(16)? Record your answer and fill in the bubbles on your answer document.

Tags

CCSS.HSF.IF.A.2

The graph shows the linear relationship between the maximum area in square feet that can be painted and the number of gallons of paint used. Which of these best represents the rate of change of the maximum area painted with respect to the number of gallons of paint used?

• 200 ft²/gal

• 1/200 ft²/gal

• 400 ft²/gal

• 1/400 ft²/gal

Tags

CCSS.HSF.IF.B.4

What are the solutions to (x + 7)^2 = 81?

• F –74 and 88

• G –2 and 16

• H –88 and 74

• J –16 and 2

Tags

CCSS.HSA-REI.B.4B

What appears to be the domain of the part of the exponential function graphed on the grid?

• A –1 ≤ x ≤ 3

• B –1 ≤ y ≤ 3

• C 5.3 ≤ x ≤ 27

• D 5.3 ≤ y ≤ 27

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which system of equations is represented by lines q and v?

• 21x - y = 9; 5x + 6y = 40

• 3x - y = -27; x + 2y = 16

• 21x - y = 9; 5x + 6y = 20

• 9x - y = -27; x + 2y = 8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which function is equivalent to f(x) = –4(x + 7)^2 – 6?

• f(x) = –4x^2 – 56x – 202

• f(x) = –4x^2 + 14x + 43

• f(x) = –4x^2 – 56x – 172

• f(x) = –4x^2 + 190