Solve using the quadratic formula.x2 - 4x + 13 = 0
A. 5, -1
B. -2 ± 3i
C. 2 ± 3i
D. 4 ± 6i
Answer: C
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Find the first four nonzero terms in the Maclaurin series for the function.f(x) = e-6x
A. 1 - 6x + 
+ 
+ . . .
B. x - 6x + 
+ 
+ . . .
C. 1 - 6x + 
+ 
+ . . .
D. -6x - 216x3 - 7776x5 - 279,936x7 + . . .
Provide an appropriate response.Tell whether or not the number is given in scientific notation.7.451 × 109
A. No B. Yes
Solve the problem.Suppose the government wants to impose a tax on fossil fuels to reduce carbon emissions. The cost benefit is modeled by 
where x represents the dollars of tax per ton of carbon emitted and P represents the percent reduction in emissions of carbon. (P is in decimal form.) Determine P when 
Round to three decimal places.
A. -0.14 B. -0.235 C. 0.239 D. 1.761
Factor completely. If the polynomial cannot be factored, write "prime."64x2 - 196
A. 4(4x + 7)(4x - 7) B. (4x + 7)(16x - 28) C. 4(4x - 7)2 D. (16x + 28)(4x - 7)