Graph the ellipse and locate the foci.4x2 + 9y2 = 36
A. foci at (
, 0) and (-
, 0)
B. foci at (0, 
) and (0, -
)
C. foci at (
, 0) and (-
, 0)
D. foci at (2
, 0) and (-2
, 0)
Answer: C
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Solve by graphing. Label the axes and show where the solution is located on the graph.The cost, T, in hundreds of dollars, of tuition at one community college is given by 
where c is the number of credits for which a student registers. Graph the equation and use the graph to estimate the cost of tuition if a student registers for 12 credits.
A. About $1800 B. About $1500 C. About $1900 D. About $700
Evaluate the expression.81 - 8 ? 3 + 4
A. 61 B. 511 C. 223 D. 80
Solve the problem. Round to the nearest cent as needed.Samantha's savings account has a balance of $4643. After 25 years, what will the amount of interest be at 6% compounded annually?
A. $15,289.16 B. $15,275.16 C. $2785.80 D. $15,284.16
Multiply and simplify.
? 
A. 
B. - 
C. - 
D. 