Simplify the expression involving rational exponents.17641/2
A. 21
B. 84
C. 168
D. 42
Answer: D
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Find the difference.13
- 
A. 11
B. 13
C. 12
D. 12
Solve the problem.Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, V, in volts, and the impedance of the circuit, Z, in ohms, by the formula 
Find V, the voltage of a circuit, if 
and Z = (5 + 7i) ohms.
A. (-24 - 70i) volts B. (70 - 24i) volts C. (-24 + 70i) volts D. (70 + 24i) volts
Provide an appropriate response.You are asked to change 
to a mixed number. What should be your first step?
A. Multiply 25 and 24. B. Divide 24 by 25. C. Add 25 and 24. D. Divide 25 by 24.
Provide an appropriate response.The height of an object after t seconds is given by the equation h = -16t2 + 9t + 9. When 
, solving for t means finding the time when the object hits the ground. A student uses the quadratic formula and finds 2 solutions. One is negative and the other positive. Which solution makes sense? Which does not? Why?
What will be an ideal response?