Solve the problem.Karin biked at 15 mph for a time but got a flat tire. She then walked at 2 mph. She traveled a total of 96 miles. Had she biked the whole time, she would have gone 135 miles. How many hours did she walk?
A. 6 hr
B. 2 hr
C. 4 hr
D. 3 hr
Answer: D
Mathematics
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Use even and odd properties of the trigonometric functions to find the exact value of the expression.sec (-?)
A. 0 B. undefined C. -1 D. 1
Mathematics
Use factoring to find the zeros of the quadratic function. List the x-intercepts of the graph of the function.h(x) = x2 + 5x - 14
A. x = -7, x = 1 B. x = 7, x = 2 C. x = -7, x = 2 D. x = 7, x = -2
Mathematics
Expand the expression using the Binomial Theorem.(5x + 3)4
A. 625x3 + 1500x2 + 1350x + 540 B. 1875x4 + 4500 x3 + 1350x2 + 1620x + 81 C. (25x2 + 15x + 9)4 D. 625x4 + 1500x3 + 1350x2 + 540x + 81
Mathematics
Fill in the blanks.802 = 
so 
= 80.
A. 6400, 6400 B. 6400, 80 C. 80, 80 D. 80, 6400
Mathematics