Solve by using the quadratic formula.x2 + 3x - 54 = 0
A. -9, 6
B. -6, 9
C. -9, 1
D. 9, 6
Answer: A
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Factor by grouping.6x2 - 8x - 9x + 12
A. (6x + 3)(x + 4) B. (2x - 3)(3x - 4) C. (6x - 3)(x - 4) D. (2x + 3)(3x + 4)
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Solve the problem.At Bargain Car Rental, the cost of renting an economy car for one day is $19.95 plus 20 cents per mile. At Best Deal Car Rental, the cost of renting a similar car for one day is $24.95 plus 15 cents per mile. Solve the inequality 24.95 + 0.15x < 19.95 + 0.20x to find the range of miles driven such that Best Deal is a better deal than Bargain.
A. x < 10 mi B. x < 100 mi C. x > 100 mi D. x > 10 mi
Solve the problem.Find two positive numbers whose sum is 44 and whose product is a maximum.
A. 11 and 33 B. 33 and 33 C. 22 and 33 D. 22 and 22