Solve the problem.Find the mass of a thin circular plate bounded by 
if 
.
A. 
?
B. 
?
C. 
?
D. 
?
Answer: B
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Solve the problem.When students at the local university held a food drive, 4374 cans of food were collected on the first day of the drive, 1458 the second day, 486 the third day, and so on. Find the total number of cans collected the first five days.
A. 11,070 cans B. 6552 cans C. 6534 cans D. 6480 cans
Identify the row operation that produces the resulting matrix.
? 
A. (-1)R2 ? R2 B. R1 + (-1)R2 ? R2 C. (-1)R1 + R2 ? R2 D. R1 + (-1)R2 ? R1
Solve the logarithmic equation symbolically.ln x + ln x9 = 10
A. x = 
B. x = e
C. x = e10/9
D. x + x9 = e10
Solve the problem.A rock falls from a tower that is 480 ft high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)?
A. 14,400 s B. 21.9 s C. 21.5 s D. 5.5 s