Give the focus, directrix, and axis for the parabola.- 
x2 = y
A. (0, -9), y = 9, y-axis
B. (0, -9), y = 9, x-axis
C. (0, 9), y = -9, y-axis
D. (-18, 0), x = 9, x-axis
Answer: A
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Find the surface area of the surface S.S is the upper cap cut from the sphere x2 + y2 + z2 = 169 by the cylinder 
.
A. 26? B. 13 C. 650? D. -26?
Solve.If an amount of money P is invested at r% annual interest compounded n times per year, then the total value V of the money after t years is given by V = P
nt. Find the value of an ititial investment of $15,000 after four years if (a) it is invested at 1% annual interest compounded yearly.(b) it is invested at 6% annual interest compounded quarterly.(c) it is invested at 2% annual interest compounded monthly.(d) it is invested at 4% annual interest compounded daily (use n = 360).
A. (a) $14,816.92, (b) $18,650.02, (c) $15,733.28, (d) $16,781.88 B. (a) $15,622.98, (b) $19,194.76, (c) $16,396.89, (d) $17,635.72 C. (a) $15,609.06, (b) $19,034.78, (c) $16,248.22, (d) $17,602.51 D. (a) $16,637.,92, (b) $20,588.01, (c) $16,328.46, (d) $17,629.76
Solve the problem.Find the centroid of the rectangular solid defined by 
, 
, 
.
A. 
= 
,
= 
, 
= 2
B. 
= 5, 
= 9, 
= 4
C. 
= 
, 
= 3, 
= 
D. 
= 
, 
= 
, 
= 1
Graph the linear equation by finding and plotting its intercepts.x = -3y
A. 
B. 
C. 
D. 