Solve by using the quadratic formula.
- 
r + 
= 0
A. -2, 2
B. -2
C. 2
D. 0
Answer: C
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Solve the problem.A water noodle is formed from a cylinder of radius 4 and height 8 by drilling through the diameter of the cylinder with a drill bit of radius 1. Find the volume of the water noodle.
A. 60? B. 128? C. 120? D. 8?
Find the sum or difference.(-4 - 4x5 + 3x7 + 2x6) + (-6x6 - 2x5 - 5 + 4x7)
A. -3x36 - 9 B. 7x7 - 4x6 - 6x5 - 9 C. -10x7 - 10x6 - 2x5 + 6 D. 7x14 - 4x12 - 6x10 - 9
Solve the problem.If the resistance in an electrical circuit is held constant, the amount of current flowing through the circuit is directly proportional to the amount of voltage applied to the circuit. When 
are applied to a circuit, 
of current flow through the circuit. Find the new current if the voltage is increased to 
A. 280 mA B. 266 mA C. 168 mA D. 300 mA
Solve the inequality graphically.8x + 8 > 2(3x - 1)
A. {
x < 8}
B. {
x > 8}
C. {
x > -5}
D. {
x < -5}