Solve the problem.Joe has to take a test which consists of short-answer questions worth 8 points each and essay questions worth 30 points each. He must do at least 3 short-answer questions, but won't have time to do more than 17. He has to answer at least 9 essay questions but can't spend time to do more than 17. If no more than 28 questions can be done, what is his maximum score?
A. 598
B. 576
C. 606
D. 488
Answer: A
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Determine the indicated function.A rectangular garden is to be surrounded on three sides by a fence costing $5 per foot and on one side by a stone wall costing $20 per foot. Let x be the length of the side with the stone wall, and let y be the length of each of the other three sides. Express the cost C of enclosing the garden as a function of the length and width.
A. C(x, y) = 20x - 15y B. C(x, y) = (20x)(15y) C. C(x, y) = 15x + 20y D. C(x, y) = 20x + 15y
Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. Not a one-to-one function
C. f-1(x) = (x + 3)2
D. f-1(x) = x2 - 3, x ? 0
Write the formula using the "language" of variation. A = ?r2, where A is the area of a circle of radius r.
What will be an ideal response?
For the given arithmetic series, what is Sn?a1 = 28, d = 1, and n = 31
A. 1333 B. 2666 C. 1361 D. 5332