Solve the problem.Find out how long it takes a $3100 investment to double if it is invested at 
compounded quarterly. Round to the nearest tenth of a year. Use the formula 
.
A. 8.6 yr
B. 9.2 yr
C. 8.8 yr
D. 9 yr
Answer: C
Mathematics
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Find the total area of the region between the curve and the x-axis.y = 2x + 7; 1 ? x ? 5
A. 26 B. 9 C. 18 D. 52
Mathematics
Provide an appropriate response.The graphs of two linear functions f and g are shown in the figure. Solve (i) the equation 
and (ii) the inequality 
A. x = 1; x < 1 B. x = 0; 0 < x < 1 C. x = 1; x < 3 D. x = 3; x < 3
Mathematics
Solve the equation. Express radicals in simplest form.x2 +16x + 62 = 0
A. 1 + 
, 1 - 
B. -8 + 
, -8 - 
C. 8 + 
, 8 - 
D. -1 + 
, -1 - 
Mathematics
Use Cramer's rule to find the solution of the system, if possible.
?
?
A. x = 2, y = -2 B. x = 5, y = -12 C. x = 5, y = -5 D. The system is inconsistent. E. The equations are dependent.
Mathematics