The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
At what time was the temperature 72°?
A. 6 p.m.
B. 9 a.m. and 10 a.m.
C. 9 a.m.
D. 10 a.m.
Answer: C
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Find the requested function value for the given function. Round the answer to the nearest tenth when necessary.If f(x) = 
, find the value of f(3).
A. 10 B. 2.4 C. 6 D. 3.2
Solve the problem.What will it cost to buy ceiling molding to go around a rectangular room with length 17 ft and width 12 ft? The molding costs $2.92 per linear foot.
A. $84.68 B. $99.28 C. $70.08 D. $169.36
Find a rectangular equation for the plane curve defined by the parametric equations.x = t3 + 1, y = t3 - 15; -2 ? t ? 2
A. y = x3; for x in -3 ? x ? 1 B. y = - x2; for x in -4 ? x ? 4 C. y = - x - 16; for x in -7 ? x ? 9 D. y = x - 16; for x in -7 ? x ? 9
Find the inverse, if it exists, of the given matrix.
A. 
B. 
C. 
D. 