Solve the problem.The elk population in a certain region is given by the function  where the time t is measured in years. How much time elapses between occurrences of the largest and smallest elk population?

A. ? 8 yr
B. ? 4 yr
C. ? 10 yr
D. ? 16 yr


Answer: A

Mathematics

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Evaluate the line integral along the curve C.ds, C is the curve r(t) = (8 - 2t)i + tj - 2tk , 0 ? t ? 1

A. - 19
B. 29
C.
D.

Mathematics

Solve.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $3400.00 with an interest rate of 8% earned $1360.00 in simple interest. Find the amount of simple interest earned if the principle is $1400.00 and the interest rate is 5%.

A. $850.00 B. $350.00 C. $35,000.00 D. $560.00

Mathematics

Determine whether the indicated ordered pair lies on the graph of the given equation.y = |x|, (-7, 7)

A. Yes B. No

Mathematics

Write a proportion that models the situation described. Then, solve the proportion for x.If 3.3 ounces of oil are to be added to 23.1 gallons of gasoline, then x ounces of oil should be added to 51.1 gallons of gasoline.

A.  = ; x = 357.7 ounces
B.  = ; x = 7.2 ounces
C.  = ; x = 7.5 ounces
D.  = ; x = 7.3 ounces

Mathematics