Use a calculator to find a decimal approximation for the indicated function value. Round your answer to four decimal places.cos (-497°)
A. -0.9744
B. -0.7314
C. -0.2924
D. -0.6820
Answer: B
Mathematics
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Solve the logarithmic equation. Give an exact answer.log72(x2 - x) = 1
A. {8, 9} B. {-8, -9} C. {1, 72} D. {-8, 9}
Mathematics
Solve the problem.Below is a diagram of a water slide. The slide is 26 ft long. The ladder leading to the slide is 19 ft long. How far is it from the end of the slide to the foot of the ladder? Round your answer to the nearest thousandth if necessary. 
?
A. 157.5 ft B. 8.874 ft C. 22.5 ft D. 17.748 ft
Mathematics
Divide.
A. 7r2 + 8r + 2
B. 7r2 - 8r - 2
C. r2 + 2r + 8
D. 7r2 + 8r + 
Mathematics
Use the "intersect" feature on a graphing calculator to solve the quadratic equation. Round all solutions to the second decimal place.x2 - 4x = -2x + 3
A. -1.00 B. 6.00, -2.00 C. 3.00, -1.00 D. 3.00
Mathematics