Solve the problem by using two equations with two variables.A chemist needs 120 milliliters of a 41% solution but has only 37% and 61% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
A. 100 ml of 37%; 20 ml of 61%
B. 103 ml of 37%; 17 ml of 61%
C. 103 ml of 37%; 20 ml of 61%
D. 20 ml of 37%; 100 ml of 61%
Answer: A
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The following table shows the area A, in square miles, and the number S of species on islands in a certain island chain. A 44,171 29,140 4,245 2,504 45 S 73 69 42 42 11? Use power regression to estimate the number of species on an island in the chain that is 3329 square miles in area. Round your answer to the nearest whole number. ?
A. 40 B. 41 C. 37 D. None of the above
Find the area or volume.Find the area between the graph of y = 
and the x-axis, for -? < x ? 0.
A. 
B. 5
C. 1
D. 10
Find the nth term of the given infinite series for which 
5 + 8 + 11 + 14 + ...
A. 3n + 5 B. n + 5 C. 2n + 1 D. 3n + 2
Write an equation for the piecewise function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = (x - 3)2 - 5