The graphing calculator screens show a system and the point of intersection. Choose the screen which best represents the given system.y = -x + 5y = x
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.The area of a circle with radius r is given by the function A(r) = ?r2. Find the area of the base of a circular storage tank if the radius is 5 feet long. Use ? ? 3.14.
A. 78.5 square feet B. 15.7 square feet C. 31.4 square feet D. 75 square feet
Mathematics
Evaluate.10a, for a = 10
A. 99 B. 100 C. 101 D. 20
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.-8
- 9
A. -17
B. -19
C. 35
D. -35
Mathematics
Evaluate the expression.
A. 1 B. 11 C. 0 D. 39,916,800
Mathematics