Evaluate the expression:
a. 20
b. 35
c. 48
c. 48
is equal to 48.
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Solve the problem.A tank contains 100 gal of fresh water. A solution containing 2 lb/gal of soluble lawn fertilizer runs into the tank at the rate of 1 gal/min, and the mixture is pumped out of the tank at the rate of 
Find the maximum amount of fertilizer in the tank and the time required to reach the maximum.
A. 48 pounds, 60 minutes B. 50 pounds, 50 minutes C. 48 pounds, 40 minutes D. 60 pounds, 40 minutes
Simplify the complex fraction.
A. 21
B. 
C. 7
D. 
Write out the first five terms of the sequence.an = 
A. 
, - 
, - 
, - 
, - 
B. 
, - 
, 
, - 
, 
C. - 
, - 
, - 
, - 
, - 
D. 
, 
, 
, 
, 
Perform the indicated operations. Write the resulting polynomial in standard form.4x(-12x - 7)
A. -12x2 - 28x B. -48x2 - 7x C. -48x2 - 28x D. -76x2