Solve the problem.Write an equation for the tangent line to the curve 
at the point 
A. 8x + 5y = 80
B. 5x + 8y = 40
C. 5x + 8y = 80
D. 8x + 5y = 40
Answer: C
Mathematics
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Solve.From a point on a river, two boats are driven in opposite directions, one at 9 miles per hour and the other at 10 miles per hour. In how many hours will they be 95 miles apart?
A. 1 hour B. 5 hours C. 6 hours D. 7 hours
Mathematics
Solve the equation.3(x2 - 12) = 81x
A. {-2, 6} B. {4, -6} C. {2, -1} D. {2, -6}
Mathematics
Solve.An engineer uses the expression 
to describe the width of a rectangular steel plate she is designing for a machine. The expression 
describes the length. Write a rational expression for the perimeter of the steel plate.
A. 
B. 
+ 
C. 
+ 
D. 
+ 
Mathematics
Determine the period of the given function.y = -3 sin x
A. 2?
B. 
C. 3
D. ?
Mathematics