Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = - 18x - x2 - 84
A. Maximum: 3
B. Maximum: -3
C. Minimum: 3
D. Minimum: 0
Answer: B
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Solve the problem.Find the value of a retirement savings account paying an APR of 6.6% (compounded monthly) after 40 years of monthly contributions (contributions made at the end of each month, including the last month) when the monthly contribution is $170. Round your answer to the nearest cent.
A. $428,359.87 B. $367,541.45 C. $371,712.72 D. $410,337.81 E. $399,104.52
Evaluate the expression without using a calculator, and write your answer in radians.
?
?
A. 0
B. 
C. 
D. 
E. 
Determine which of the given viewing windows shows the point of intersection of the graphs of the equations.5x + y = -511y - x = -335
A. [-10, 2, -10, 0] B. [50, 125, -20, 20] C. [-5, 10, -70, 0] D. [0, 2, 0, 10]
Solve the problem.Walt made an extra $7000 last year from a part-time job. He invested part of the money at 9% and the rest at 10%. He made a total of $660 in interest. How much was invested at 10%?
A. $3000 B. $3500 C. $5000 D. $4000