Find the value of the algebraic expression at the given replacement value.
when x1 = -8, x2 = 7, y1 = 4, y2 = 1
A. 5
B. - 
C. 
D. - 5
Answer: B
Mathematics
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Solve.A computer printer costs $720. If the sales tax rate is 3
%, how much tax is charged and what is the total price? Round your answers to the nearest cent.
A. $252.00, $972.00 B. $25.20, $745.20 C. $18.00, $738.00 D. $32.40, $752.40
Mathematics
If the function is one-to-one, find its inverse. If not, write "not one-to-one."{(12, 1), (-10, 1), (11, -14)}
A. not one-to-one B. {(1, 12), (11, -10), (-14, 1)} C. {(12, 1), (1, -10), (-14, 11)} D. {(1, 12), (1, -10), (-14, 11)}
Mathematics
Find the sum.15
+ 
A. 7
B. 7
C. 22
D. 21
Mathematics
Convert using dimensional analysis.4 square yards to square feet
A. 144 ft.2 B. 1.3333 ft.2 C. 12 ft.2 D. 36 ft.2
Mathematics