Solve the system of equations by the substitution method. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent or dependent. x + 3y = -8-5x + 2y = -45
A. (7, -5)
B. (6, -4)
C. No solution; inconsistent
D. (-7, -4)
Answer: A
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Find the point(s) at which the given function equals its average value on the given interval.f(x) = 3 - x2; [-6, 3]
A. 
B. ±2
C. ±
D. ±3
Solve the problem.The minimum length L of a highway sag curve can be computed by L = 
,where ?1 is the downhill grade in degrees (?1 < 0°), ?2 is the uphill grade in degrees (?2 > 0°), S is the safe stopping distance for a given speed limit, h is the height of the headlights, and ? is the alignment of the headlights in degrees. Compute L for a 55-mph speed limit, where 
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and 
Round your answer to the nearest foot.
A. 552 ft
B. 598 ft
C. 566 ft
D. 582 ft
Evaluate.log4 
A. 
B. -3
C. 3
D. - 
Find a bound on the error in approximating the integral 
using
(a) the Trapezoidal Rule and (b) Simpson’s Rule with n = 10 subintervals.