Solve the problem.A cubic salt crystal expands by accumulation on all sides. As it expands outward find the rate of change of its volume with respect to the length of an edge when the edge is 
A. 0.6075 mm3/mm
B. 0.27 mm3/mm
C. 60.75 mm3/mm
D. 6.08 mm3/mm
Answer: A
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Solve the equation. Express radicals in simplest form.
d2 - d + 
= 0
A. 
B. ?
C. 
D. 
Determine whether the equation defines y as a function of x.y = 
A. Yes B. No
Don opened a retirement account with an APR of 3.25% compounded monthly. He is planning to retire in 15 years. About how much will he have in the account when he retires if he deposits $750 a month?
A. $173,677.27 B. $165,812.50 C. $73,677.21 D. $65,812.50
Solve the problem.The voltage in a circuit is described by the polynomial 9x6 + 24x2 + 30x. The resistance is described by 3x. Find an expression for the current. (Hint: Voltage = Current x Resistance).
A. 3x6 + 8x2 + 10x B. 9x5 + 24x + 30 C. 3x5 + 8x + 10 D. 3x6 + 24x2 + 30x