Solve the problem.Use the formula N = Iekt, where N is the number of items in terms of the initial population I, at time t, and k is the growth constant equal to the percent of growth per unit of time. A certain radioactive isotope has a half-life of approximately 1500 years. How many years would be required for a given amount of this isotope to decay to 25% of that amount?
A. 3000 years
B. 1125 years
C. 2975 years
D. 623 years
Answer: A
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The weight of a baby blue whale over the first 7 months of its life can be calculated using
,
where W is the weight, in tons, andT is the age, in months.A: Find a formula that expresses T as a function ofW.B: The length L, in feet, is given by
.
Use your answer from part A to find a formula that gives the length as a function of the weight.C: How long is a baby blue whale if its weight is 16.4 tons?
What will be an ideal response?
Find the requested function value of ?.If cos ? = 0.2308, find tan ?.
A. 0.9730 B. 4.216 C. 0.2372 D. 1.028
Decide whether or not the number is a zero of the polynomial.P(x) = -4x3 + x2 + 7x - 2; -3
A. No B. Yes
The graph of a function f is given. On the same axes, sketch the graph of f-1. 
A. 
B. 