2018 Algebra 1 STAAR Test

At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains

8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes. Which function shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry, and x, the number of boxes in the pantry?

• y= 8x+ 6

• y= 8x

• y= 8x− 2

• y= 6x

Tags

CCSS.HSF-BF.A.1A

Which expression is equivalent to −−28x2 + 35x?

• 7x(4x+ 5)

• -7x(4x-5)

• 7x(4x-5)

• -7x(4x+5)

Tags

CCSS.7.EE.A.1

Which graph best represents a system of equations that has no solution?

• 
• 
• 
• 

Tags

CCSS.8.EE.C.8A

Which statement about the graph of $y\ =\ 8\left(0.25\right)^x$ is true?

• The coordinates of the x-intercept are (0.25, 0).

• The coordinates of the y-intercept are (0, 8).

• The equation of the asymptote is x = 0.

• The graph includes the point (2, 1).

Tags

CCSS.HSF-IF.C.7E

 $\ What\ is\ the\ range\ ofy\ =\ -x^2-2x+3?$  

•  $x\le4$  

•  $x\ge-4$  

•  $y\le4$  

•  $y\ge-4$  

Which expression is equivalent to (144k²r¹⁴)^1/2 for all positive values of k and r?

• 12kr⁷

• 72k²r¹⁴

• 144kr⁷

• 12k²r¹⁴

The graph shows the height in feet of an object above the ground t seconds after it was launched from the ground.

Which function is best represented by the graph of this situation?

• h(t) = -16t² - 64t

• h(t) -16t² + 128t - 256

• h(t) = -16t² + 64t

• h(t) -16t² - 128t - 256

What value of n makes the equation 4(0.5n − 3) = n −−0.25(12 − 8n) true?

• 3

• -9

• 0

• -15

Tags

CCSS.8.EE.C.7B

In a sequence of numbers, a₃ = 0, a₄ = 6, a₅ = 12, a₆ = 18, and a₇ = 24 . Based on thisinformation, which equation can be used to find the nth term in the sequence, a_n?

• a_n = -6n +18

• a_n = -18n + 6

• a_n = 6n -18

• a_n = 18n - 6

Tags

CCSS.HSF.BF.A.2

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

• 1 2/3

• 7

• 15