Select an algebraic expression for the verbal description.
?
The perimeter of a rectangle with a width x and a length that is two times the width.
?
A. 2x
B. 4x
C. 6x
D. 7x
E. 11x
Answer: C
Mathematics
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Solve the initial value problem for x as a function of t.(t2 + 4t)
= 4x + 4, x(1) = 1
A. x = 
- 1
B. x = 10 ln
- 1
C. x = 
- 1
D. x = 10t + ln 
- 1
Mathematics
Multiply.(-4)(-4)(-4)
A. -54 B. -74 C. -64 D. 64
Mathematics
Find the nth term of the arithmetic sequence with the given values.a1 = -0.08, d = 0.05, n = 18
A. 0.82 B. 0.77 C. 0.85 D. -0.93
Mathematics
Solve. Round to the nearest hundredth, if necessary.According to Ohm's law, the electric current I, in amperes, in a circuit varies directly as the voltage V. When 17 volts are applied, the current is 4 amperes. What is the current when 21 volts are applied?
A. 4.94 amperes B. 42 amperes C. 4.25 amperes D. 89.25 amperes
Mathematics