Find the axis of symmetry of the given function.y = 2x2 + 8x + 7
A. x = -1
B. x = 1
C. x = 2
D. x = -2
Answer: D
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Find two integers whose product is 77 such that one of the integers is three less than twice the other integer.
A. 8, 12 B. 8, 10 C. 6, 12 D. 6, 10 E. 7, 11
Use the factor theorem to determine if x - c is a factor of f(x). If so, use synthetic division to write f(x) in the form 
f(x) = x3 + 343; x + 7
A. (x + 7)(x2 - 7x + 49) B. (x + 7) is not a factor C. (x + 7)(x2 + 49) D. (x + 7)(x2 + 7x + 49)
Find the rate of change.The initial concentration of an enzyme is 5 moles (mol). Twenty seconds into the reaction, only 0.4 mol of the enzyme remains. Find the rate of change of the enzyme in mol/s.
A. 0.23 mol/s B. -4.35 mol/s C. -0.23 mol/s D. 4.35 mol/s
Solve the problem.Midtown Antiques collects 3% sales tax on all sales. If total sales including tax are $1034.87, find the portion that is the tax. Round to the nearest cent if necessary.
A. $30.14 B. $31.05 C. $20.14 D. $1004.73