Find the domain of the logarithmic function.f(x) = ln 
A. (0, ?)
B. (-5, ?)
C. (1, ?)
D. (5, ?)
Answer: D
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Solve the equation by the zero-factor property.(x - 6)(x + 2) = -12
A. {6, -2} B. {-2, -6} C. {-14, 6} D. {4, 0}
Find the length of the indicated portion of the curve.r(t) = (etcos t)i + (etsin t)j + 7etk, -ln 2 ? t ? 0
A. 
B. 
C. 
D. 
Solve the problem.Four bacteria are placed in a petri dish. The population will double every day. The formula for the number of bacteria in the dish on day t is N(t) = 4(2)twhere t is the number of days after the four bacteria are placed in the dish. How many bacteria are in the dish five days after the four bacteria are placed in the dish?
A. 100 B. 40 C. 128 D. 11
The size of the monthly repayment k that amortizes a loan of A dollars in N years at an interest rate of r per year, compounded monthly, on the unpaid balance is given by 
The value of r can be found by performing the iteration 
A family secured a loan of $360,000 from a bank to finance the purchase of a house. They have agreed to repay the loan in equal monthly installments of $2476 over 25 years. Find the interest rate on this loan. Round the rate to one decimal place.
a. 8.7% b. 7.7% c. 6.7% d. 5.7%