Which equation is equivalent to the equation below, when solved for y?
                                             2(x + y) - z = 2x + z

A.)  y = 1
B.)  y = z
C.)  y = 1 + 4x
​D.)  y = z + 4x

Solve the equation  x² + 6x = -11/4
A.)  x = -3 and 2
B.)  x = -2 and 3
C.)  x = 1/2 and -11/2
​D.)  x = -1/2 and -11/2

A ball was thrown upward into the air.  The height in feet of the ball, above the ground, t seconds after being thrown can be determined by the expression -16t² + 40t + 3.  What is the meaning of the 3 in the expression?
A.)  the ball took three seconds to reach its maximum height
B.)  the ball took three seconds to reach the ground
C.)  the ball was thrown from a height of three feet
​D.)  the ball reached a maximum height of three feet

An equation is shown.

16x² + 10x - 27 = -6x + 5

What are the solutions to the equation?

An equation is given.

A = 4πr²

Solve the equation for r.

A system of equations is given.

y = x² - 9
y = -2x - 1

What is one solution to the system?

Select the most appropriate unit for each selection.

A function is given.

What is the value of f(-2) ?