Solve the equation.
= -9
A. -15
B. -14
C. 1
D. 45
Answer: D
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Solve the problem.A rocket lifts off the surface of Earth with a constant acceleration of 30 m/sec2. How fast will the rocket be going 2.5 minutes later?
A. -75 m/sec B. 37.5 m/sec C. 75 m/sec D. 187.5 m/sec
Use synthetic division to decide whether the given number is a solution of the given equation.x3 + 7x2 - 16x + 18; x = 2 + i
A. Yes B. No
Solve the problem using Snell's Law: 
= 
.A light beam in air travels at 2.99 × 108 meters per second. If its angle of incidence to a second medium is 39° and its angle of refraction in the second medium is 29°, what is its speed in the second medium (to two decimal places)?
A. 1.45 × 108 mps B. 2.30 × 108 mps C. 3.88 × 108 mps D. 1.88 × 108 mps
Use Cramer's Rule to solve the system of equations. Use technology to compute the determinants involved.
A. {(6, -7, -7)} B. {(7, 7, 7)} C. {(6, 7, 7)} D. {(7, 5, 7)}