Use reduction formulas to evaluate the integral.
A. 
(sin8 x - sin10 x) + C
B. 
sin8 x - 
sin10 x + C
C. 
sin6 x - 
cos10 x + C
D. 
cos6 x - 
cos8 x + C
Answer: B
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Solve the problem.Forensic scientists use the lengths of certain bones to calculate the height of a person. When the femur (f), the bone from the knee to the hip socket is used, the following formula applies for men: 
where h is the height and f is the length of the femur. Find the height of a man with a femur measuring 50 centimeters.
A. 3566.5 cm B. 8.52 cm C. 181.09 cm D. 119.09 cm
The graph of f(x) = ax2 + bx + c is given in the figure. Determine whether the discriminant is positive, negative, or zero.
A. Zero B. Negative C. Positive
Simplify the expression.(-4)2 ? 80
A. -16
B. 
C. - 
D. 16
Solve the problem.A college student earned $7100 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 
and the rest at 
If the student received a total of $466 in interest at the end of the year, how much was invested at 
A. $3550 B. $1183 C. $3100 D. $4000