Unit 7 Test Corrections (Highest score is a 70)

What are the solutions to the equation x² + 2x-3=0?

• x = 2, -1

• x = -1,3

• x= -2, 1

• x= 1, -3

What value of x is the solution to this equation? x² = 7x + 18

• {-7, -18}

• {9, 2}

• {9, -2}

• {2, 7)

What is the positive solution to x² + 2x - 15=0?

What are the solutions to the equation 2x² - x -3=0?

• {-1.5, 1}

• {1.5, -1}

• {-1.5, -1}

• {1.5, 1}

Prince is trying to throw a ball over a fence. The height of the ball, in feet based on the number of seconds, is represented by the equation f(t)= -3.5t² + 14t +3. At what time will the ball hit the ground?

• t = -0.204, 4.204

• t= 0.204, 4.204

• t = -0.204

• t = 4.204

Simplify: 4√75

• 4√5

• 12√5

• 20√3

• 7√3

Which expression is equivalent to √150 ?

• 5√15

• 5√6

• 5√2

• 15√5