Find the focus and directrix of the parabola with the given equation.y2 = -28x
A. Focus: (0, 7), directrix: y = -7
B. Focus: (0, -7), directrix: y = 7
C. Focus: (7, 0), directrix: x = -7
D. Focus: (-7, 0), directrix: x = 7
Answer: D
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Solve the problem.Let f(x) = x3. Find the order n of the Maclaurin polynomial required to approximate f on [-0.5, 0.5] with an error no more than 0.002.
A. n ? 3 B. n ? 4 C. n ? 1 D. n ? 2
Identify the units you would expect for the given quantity.The gas mileage of a car, when you travel 4016 kilometers using 8 gallons of gas.
A. gal/km B. $/gal C. km/gal D. 50
Find x: x2 = 64
a. x = 2 b. x = 4 c. x = 8 d. x = 16 e. x = 32
Estimate the sum or difference by first rounding each value to the indicated place value. Then find the actual sum or difference.-704.85 - (-51.93)
round each to the nearest ten
A. Estimate: 650; Actual: 653.92 B. Estimate: -640; Actual: -642.92 C. Estimate: -640; Actual: -652.92 D. Estimate: -650; Actual: -652.92