Simplify.
A. 35
B. 7
C. 13
D. 5
Answer: D
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Solve the problem.dy/dt = ky + f(t) is a population model where y is the population at time t and f(t) is some function to describe the net effect on the population. Assume k = 0.02 and 
when t = 0. Solve the differential equation of y when f(t) = 2t.
A. y = -100t - 5000 + 15,000e-0.02t B. y = -100t - 5000 + 15,000e0.02t C. y = 100t - 5000 + 15,000e-0.02t D. y = 100t + 5000 + 15,000e-0.02t
Solve for x using an equivalent exponential expression.Approximate to the nearest hundredth the volume of a sphere with diameter of 4.9 meters. Use 3.14 for ?.
A. 369.42 cu m B. 12.57 cu m C. 61.57 cu m D. 75.39 cu m
Solve the problem.
Jackie Rambler purchased a home for $124,000. Oakwood Mortgage Company approved her loan application for a 22-year fixed-rate loan at 6.25%. Jackie agreed to pay 20% of the purchase price as a down payment. How much interest would she have saved if she made the same loan with the same down payment for 12 years?
A. $41,521.15 B. $51,901.44 C. $43,592.45 D. $37,592.83
Solve.A hiking trail is 19,008 meters long. How many kilometers long is the trail?
A. 190.08 km B. 19.008 km C. 1.9008 km D. 1900.8 km