Solve the problem.A boat goes 450 miles downstream in the same time it can go 360 miles upstream. The speed of the current is 3 miles per hour. Find the speed of the boat in still water.
A. 24 mph
B. 81 mph
C. 30 mph
D. 27 mph
Answer: D
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An electronics store manager stocks from 30 to 40 IBM-compatible computers and from 40 to 50 Macintosh computers. There is room in the store to stock up to 80 computers. The manager receives a commission of $60 on the sale of each IBM-compatible computer and $30 on the sale of each Macintosh computer. If the manager can sell all of the computers, find the maximum commission. Inventory IBM MacintoshMinimum 30 40Maximum 40 50Commission $60 $30
A. $3,700 B. $3,300 C. $3,200 D. $3,600 E. $3,800
Solve the problem.Find the equation of the circle, written in the form 
, passing through the points 
A. x2 + y2 + 10x + 6y + 9 = 0 B. x2 + y2 - 10x - 6y - 2 = 0 C. x2 + y2 - 10x - 6y + 9 = 0 D. x2 + y2 - 5x - 3y + 9 = 0
Solve the equation.17 = 7x - 4
A. 6 B. 14 C. 18 D. 3
Use the Rational Zeros Theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x) = x3 + 2x2 - 9x - 18
A. -2; f(x) = (x + 2)(x2 + x - 9) B. -3, -2, 3; f(x) = (x + 3)(x + 2)(x - 3) C. -3; f(x) = (x + 3)(x2 - x - 6) D. -3, 2, 3; f(x) = (x + 3)(x - 2)(x - 3)