Starr Algebra

The graph of f(x)= x² was transformed to create the graph of g(x) = (x - 7.5)². Which of these describes the transformation?

• A horizontal shift to the right 7.5 units

• A horizontal shift to the left 7.5 units

• A vertical shift down 56.25 units

• A vertical shift up 56.25 units

A particular type of cell doubles in number every hour. Which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells?

• n= 4(1/2)^h

• n= 4(2)^h

• n= 4+ (2)^h

• n= 4 + (1/2)^h

Tags

CCSS.HSF.LE.A.2

The population of Center City is modeled by exponential function f, where x is the number of years after the year 2015. The graph of f is shown on the grid.

• x ≥ 0

• y ≥ 250,000

• 0 ≤ x ≤ 110

• 250,000 ≤ y ≤ 1,000,000

Tags

CCSS.HSF-IF.C.7E

The value of y is directly proportional to the value of x. If y=35 when x= 140, what is the value of y when x = 70?

• 18

• 29

• 17.5

• 15

A projectile is launched into the air from the ground. The table shows the height of the projectile, h(t), at different times. Based on the table, which function can best be used to model this situation?

• h(t)= 99t² + 858

• h(t)= -4.9t² + 295t + 0.6

• h(t)= -4.9t² +295t + 2

• h(t)= 99t² + 1,470.3

The graph of part of linear function is g shown on the grid. Which inequality best represents the domain of the part shown?

• -9 < x ≤ 2

• -9 ≤ x < 2

• -6 < g(x) ≤ 3

• -6 ≤ g(x) < 3

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

The graph of a quadratic function is shown on the grid. Which equations best represents the axis of symmetry?

• y = 6

• x = 2

• y = 4

• x = 0

Tags

CCSS.HSF-IF.C.7A

If p(x) = 5(x² + 1) + 16, what is the value of p(11)?

• 690

• 736

• 622

• 626

Tags

CCSS.HSF.IF.A.2

Which expression is equivalent to (7x³)² (x⁸)^1/2?

• 14x¹⁰

• 49x¹⁰

• 14x⁷

• 49x⁷

Tags

CCSS.HSA.APR.A.1

Range greater than or equal to 6?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5