Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 - 8x - 4y + 11 = 0
A. Center (4, 2), r = 3
B. Center (4, -2), r = 3
C. Center (-4, 2), r = 3
D. Center (-4, -2), r = 3
Answer: A
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Calculate the quotient.-8 ÷ 0
A. 0 B. 1 C. -1 D. cannot be done
Match the graph to the function listed whose graph most resembles the one given.
A. square root function B. cube function C. cube root function D. square function
Write as the sum and/or difference of logarithms. Express powers as factors. log16
A. 
log1613 - 2 log16n - 2 log16m
B. 9 log1613 - 2 log16n - log169
C. log1613 - log16n - log16m
D. 
log1613 - 2 log16n - log16m
Determine an estimate of the exact answer. Use estimation by rounding.Johnston Community Hospital estimates that 31.5% of all operations in hospitals are hip replacements. If 7,840,662 operations were performed last year, estimate the number of hip replacement operations. (Round the percent to the nearest one and the number of operations to the nearest million)
A. 2,560,000 B. 2,469,808.53 C. 2,509,011.84 D. 246,980,853