Solve each equation for y as an expression in x. Then equate the expressions to obtain an equation in the variable x. Finally, solve the equation for the unknown x.y - 6x = 14; y - 5x = 2
A. {12}
B. {-16}
C. {-12}
D. {16}
Answer: C
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Solve the problem.Melanie deposits $250 each month in an ordinary annuity to save for a trip to Europe. If the annuity pays a monthly rate of 
how much will she be able to save in 4 years?
A. $2573.84 B. $13,858.75 C. $6432.80 D. $8790.65
Find the product. Write the product in rectangular form, using exact values.[7(cos 120° + i sin 120°)] [2(cos 90° + i sin 90°)]
A. 5
- 
i
B. -7
- 7 i
C. 7
- 28 i
D. 14 - 14
i
Determine if the sequence is arithmetic. If the sequence is arithmetic, find the common difference.an = 
A. yes, 
B. yes, - 
C. no
D. yes, 8
Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.
A. linear; positive B. quadratic; positive C. linear; negative D. quadratic; negative