Match the equation with its graph.y = 4x + 5
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A certain radioactive isotope decays at a rate of 2% per 200 years. If t represents time in years and y represents the amount of the isotope left, use the condition that 
to find the value of k in the equation 
A. -0.02020 B. 0.00010 C. 0.01332 D. -0.00010
Decide whether or not the functions are inverses of each other.f(x) = 9x - 7, g(x) = 
A. Yes B. No
Solve the problem.The amount of particulate matter left in solution during a filtering process decreases by the equation 
where n is the number of filtering steps. Find the amounts left for n = 0 and 
(Round to the nearest whole number.)
A. 1000; 63 B. 1000; 16,000 C. 2000; 63 D. 1000; 31
Solve the problem.The daily number of visitors v to an amusement park was always at least 804 but never more than 1121. Express this as an inequality.
A. 804 < v < 1121 B. v ? 804 or v ? 1121 C. v < 804 or v > 1121 D. 804 ? v ? 1121