Solve the system of linear equations. 7x + 8y = -40 5x + 2y = -10
A. (-1, -4)
B. (0, -4)
C. (0, -5)
D. No solutions
Answer: C
Mathematics
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Solve the problem.The sales of a mature product (one which has passed its peak) are given by the function 
where t is time in years. Find the sales after 12 years if 
and 
A. 17,400 B. 9908 C. 82,804 D. 19,816
Mathematics
Solve the problem.Calculate the number of shares purchased with a $8000 investment in a no load mutual fund with a net asset value of $8.12. Round to three decimal places.
A. 98.522 shares B. 985.222 shares C. 1015.000 shares D. 6496.000 shares
Mathematics
Solve the equation.64 = 8x + 8x
A. 80
B. 4
C. 48
D. 
Mathematics
Translate the percent problem to a proportion using x for the unknown value. Do not solve the proportion.21 is what percent of 76?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics