Algebra Models

The equation below represents an elevator's height after an amount of seconds. Using this equation, what should the height of the elevator be after 14 seconds?
h(s) = -3.8s + 290

• 80

• 236.8

• -80

• 72.6

The cost of hiring a private tutor is modeled by the function C(n)=32n+20. How many hour did the tutor work to earn $212?

• 4 hours

• 6 hours

• 5 hours

• 7 hours

The equation of the trend line
is  y= 1/2x +1. Use the equation to determine the amount of time it would take to bike 20 laps. 
*Look at the x and y axis first before starting the problem
   

• 38 minutes

• 11 minutes

• 41 minutes

• 10 minutes

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

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

• —10 and 3

• 10 and —3

• —15 and 2

• 15 and —2

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

• (0, 4)

• (-4, 1)

• (2, 4)

• (4, -1)

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

• x = -5

• x = 5

• x = -50

• x = 30

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

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