Find the indicated product.(a + 7b)(x + y)
A. ax + 9bx + ay + 8by
B. ax + 7bx + ay + by
C. ax + 7bx + ay + 7by
D. ax + 8bx + ay + 7by
E. ax + bx + ay + 8by
Answer: C
Mathematics
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for ?y. Round your answers to two decimal places.
?
A. 
B. 
C. 
D. None of the above.
Mathematics
Find the limit.
4x-7
A. 0 B. -4 C. ? D. -?
Mathematics
Write as a percent.0.1566
A. 0.01566% B. 15.66% C. 1.566% D. 156.6%
Mathematics
Solve the problem.A boat can go 99 mph in still water. It takes as long to go 250 mi upstream as it does to go downstream 300 mi. How fast is the current?
A. 8 mph B. 9 mph C. 5 mph D. 1 mph
Mathematics