Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form.9x + 8y = 82x + 4y = 4
A. No solution
B. (-1, 2)
C. (0, 1)
D. (0, 2)
Answer: C
Mathematics
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Solve the problem.Mr. Lee wanted to keep track of how far he was driving today. He drove to Lodi which was 
, then he drove to Merced which was 
, then he drove home which was 
. How far did Mr. Lee drive?
A. 66.40 mi B. 65.40 mi C. 65.41 mi D. 66.41 mi
Mathematics
Perform the indicated operation. Assume that all variables represent nonnegative real numbers.-5k
- 5
A. -5k
- 10
B. -15
C. -45k
D. -15k
Mathematics
Use common or natural logarithms to solve the exponential equation symbolically.4(1 + 2x) = 64
A. x = 
- 2
B. x = 
- 
C. x = 
- 2
D. x = 2 + 
Mathematics
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
A. (-6, 0), (7, 0) B. (-7, 0), (6, 0) C. (5, 0) D. none
Mathematics