Solve the problem.Sam drives a distance of m miles to work traveling at an average speed of x mph. On the way home, he drives 3 mph faster. The expression 
+ 
, represents the total amount of time in hours it takes for Sam to drive to work and back. Represent this amount of time as a single rational expression.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Express the number in scientific notation.0.000154
A. 1.54 × 10-3 B. 1.54 × 10-5 C. 1.54 × 10-4 D. 1.54 × 104
Mathematics
Factor completely, or state that the polynomial is prime.18y2 + 57y + 30
A. prime B. 3(2y + 1)(3y + 10) C. 3(10y + 5)(y + 2) D. 3(2y + 5)(3y + 2)
Mathematics
Find the slope of the tangent line to the graph of the given function 
at the point 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in standard position. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant IV. f(? + ?)
A. 
B. 
C. 
D. 
Mathematics