Use a graphing utility to solve the system of equations. Express the solution rounded to two decimal places.
A. x = 1.18, y = 1.03; x = 1.07, y = 1.52; x = -0.91, y = 2.88
B. no solution
C. x = 1.99, y = 0.13; x = 1.04, y = 1.70; x = -0.91, y = 2.95
D. x = 1.81, y = 0.28; x = 0.20, y = 2.45; x = -0.20, y = -2.45
Answer: A
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Solve the problem.A garage owner wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for his customers. How many gallons of 100% antifreeze should he mix with some 10% antifreeze mixture in order to fill the drum?
A. 48
gallons
B. 19
gallons
C. 6
gallons
D. 35
gallons
Multiply and reduce your answer to lowest terms.
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?
A. 
B. 
C. 
D. 
E. 
Use the product rule to find the derivative. f(x) = (5x + 6)2
A. f'(x) = 50x + 60 B. f'(x) = 10x + 12 C. f'(x) = 25x + 36 D. f'(x) = 25x + 30
Use mathematical induction to prove that (–3) + (–1) + 1 + 3 + . . . + (2n – 5) = n(n – 4), n any positive integer.
What will be an ideal response?