Solve.A small business owner made $40,000 the first year he owned his store and made an additional 
over the previous year in each subsequent year. Find how much he made during his fourth year of business. Find his total earnings during the first four years. (Round to the nearest cent, if necessary.)
A. $8.64; $42,552.64
B. $262,144.00; $632,384.00
C. $47,640.64; $174,984.64
D. $163,840.00; $370,240.00
Answer: C
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Solve the problem.Find the value of b for which 1 + eb + e2b + e3b + ... = 8.
A. ln 
B. ln 
C. ln 
D. ln 
Provide an appropriate response.Change 70 kilometers to miles. (Round to nearest tenth; 1 mi = 1.6 km.)
A. 112.5 B. 112 C. 43 D. 43.8 E. none of the above
Obtain an equivalent system by performing the stated elementary operation on the system.Multiply the second equation by -1. x - 5y + z = 35x - 2y - z = -18 3x + y + 2z = -18 x - 5y + z = -15
A. -x + 5y - z = -3 5x - 2y - z = -18 3x + y + 2z = -18 x - 5y + z = -15 B. x - 5y + z = 3 -5x + 2y + z = -18 3x + y + 2z = -18 x - 5y + z = -15 C. x - 5y + z = 3 -5x + 2y + z = 18 3x + y + 2z = -18 x - 5y + z = -15 D. x - 5y + z = 3 -5x - 2y - z = -18 3x + y + 2z = -18 x - 5y + z = -15
Classify the system as consistent or inconsistent, and dependent or independent. x + 2y = 175x - 4y = 1
A. Consistent and dependent B. Inconsistent and dependent C. Inconsistent and independent D. Consistent and independent