Write the English phrase as an algebraic expression, then simplify the expression. Let x represent the number.seven times the product of 5 and a number.
A. 7
; 
x
B. 7 + 5x; 12x
C. 7(5x); 35x
D. 7(x + 5); 7x + 5
Answer: C
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (x2 + y2)i + (x - y)j; C is the rectangle with vertices at (0, 0), (3, 0), (3, 7), and (0, 7)
A. 168 B. -126 C. 126 D. 0
Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.51x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.62 B. $2.70 C. $3.57 D. $0.01
Find the mean. Round to the nearest tenth unless otherwise stated.Number of days spent working out in a month: 20, 9, 18, 10, 15, 10, 3, 3
A. 12.57 B. 23 C. 10 D. 11
Solve.Given that sin ? = 
and that the terminal side is in quadrant II, find 
.
A. - 
B. 
C. - 
D. 