Graph the function by hand. Solve the equation f(x) = 0 by observing your graph. Round approximations to two decimal places.f(x) = 
A. ?
B. ?
C. {2.24}
D. {5}
Answer: D
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Determine if the given function y is a solution of the differential equation that follows it. Assume that C is an arbitrary constant.y = Ce-5t; y'(t) + 5y = 0
A. No B. Yes
The demand function for a certain brand of compact disc is 
, where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand.
?
Compute the elasticity of demand (to the nearest hundredth) when x = 15.
?
__________
?
Determine whether the demand is inelastic, unitary, or elastic when x = 15.
?
__________
What will be an ideal response?
Solve the problem.A computer compiles a program in 8.572 x 10-6 seconds. Express this time in standard notation.
A. 0.000008572 sec B. -8,572,000 sec C. 0.0000008572 sec D. 0.00008572 sec
Perform the matrix operation.Given A = 
, find 5A.
A.
B. 
C. 
D. 