Functions Algebra I Regents

Find the difference:
(2x + 7) - 3(5x - 4)

• -13x - 5

• 17x + 5

• 17x + 5

• -13x + 19

Tags

CCSS.6.EE.A.3

What are the zeros of the function f(x) = x² — 13x — 30? 

• —10 and 3

• 10 and —3

• —15 and 2

• 15 and —2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What is one point that lies in the solution set of the system of inequalities graphed?

• (0, 4)

• (-4, 1)

• (2, 4)

• (4, -1)

Tags

CCSS.HSA.REI.D.12

Which function represents exponential decay?

• f(x) = 100(0.9)^x 

• f(x) = 10(1.09)^x 

• f(x) = 1.9^x

• f(x) = ½(9)^x

Tags

CCSS.HSF-IF.C.8B

The function f(x)=3x+10 models the total cost Katie charges to babysit x amount of children. What is the most appropriate domain for the function?

• All rational numbers

• All integers

• All non-negative rational numbers

• All non-negative integers

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

Tags

CCSS.HSF.IF.A.2

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSF-IF.C.7A

How many solutions does this graph have?

• one

• two

• no solutions

• cannot be determined

The function f(x)=2x+8 models the total cost to order x amount of light bulbs from an online company. What is the appropriate domain of the function?

• All non-negative integers

• All non-negative rational numbers

• All integers

• All rational numbers

Jasmine compared the x-intercept of f(x) = 2x – 8 to the x-intercept of the function shown in the table.

What is the value of the larger x-intercept of the two functions?

• -8

• -2

• 4

• 16

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9