Solve the problem.Assume that the rate of change of population of a certain city is given by 
where y is the population at time t, in years. The population was 100,000 in 1980 
in 1980). Predict the population in 2020.
A. 1,202,318
B. 982,318
C. 1,162,318
D. 1,102,318
Answer: D
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Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round to four decimal places.log0.218
A. 0.5563 B. -0.5568 C. -1.7959 D. 1.9542
Graph f as a solid line and f-1 as a dashed line in the same rectangular coordinate space. Use interval notation to give the domain and range of f and f-1.f(x) = (x - 5)2, x ? 5
A. 
f domain = (-?, ?); range = (0, ?)
f-1 domain = (0, ?); range = (-?, ?)
B. 
f domain = (5, ?); range = (0, ?)
f-1 domain = (0, ?); range = (5, ?)
C. 
f domain = (-?, ?); range = (0, ?)
f-1 domain = (0, ?); range = (-?, ?)
D. 
Has no inverse
f domain = (-?, ?); range = (0, ?)
Find the phase shift of the function.y = 4 sin 
A. 2? units down
B. 
units to the right
C. 4? units up
D. 
units to the left
Solve.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of - 37 feet. They then rose 24 feet. What was their elevation at this point?
A. 13 ft B. -61 ft C. -13 ft D. 61 ft