Solve.While looking through the properties of her 3 - 1/2 inch diskette, Amy noticed that 
of the space on the disk was not being used. She deleted four files that were using 
of the disk space. What fractional part of the disk space was free after she deleted the four files?
A. 
of the disk was free
B. 
of the disk was free
C. 
of the disk was free
D. 
of the disk was free
Answer: C
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.Differential equation: xy' + y = 
Initial condition: y(9) = 2Solution candidate: y = 
+ 
A. No B. Yes
Find the area of the specified region.Shared by the circle r = 8 and the cardioid r = 8(1 + sin ?)
A. 16(5? + 8) B. 64 C. 16(5? - 8) D. 0
Translate the problem to a system of equations, then solve using Cramer's Rule.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 500 gallons of gasohol containing 10% alcohol?
A. 208 gal 5%, 292 gal 12% B. 143 gal 5%, 357 gal 12% C. 357 gal 5%, 357 gal 12% D. 25 gal 5%, 60 gal 12%
Rewrite the following number using digits.Two hundred six thousand, one hundred seven
A. 207,106 B. 260,170 C. 206,107 D. 2617