x? = ?4x ? 5y, y? = ?x
Solve the first-order linear system.
Mathematics
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Find the slope of the line. 
A. 
B. 4
C. - 4
D. - 
Mathematics
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Add or subtract as indicated. Write the answer in lowest terms.19
- 
A. 18
B. 18
C. 19
D. 17
Mathematics
Evaluate the function as indicated.Find f(3.2) when f(x) = 1.0x - 9.
A. 2.3 B. -12.2 C. 12.2 D. -5.8
Mathematics