Write a formula for the nth term of the given geometric sequence. Do not use a recursion formula.
,
,
,
, ...
A. an = -
(n - 1)
B. an = +
(n - 1)
C. an = n - 1-
D. an = n - 1
Answer: D
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Find the perimeter of the specified triangle. Assume the triangles are similar.Find the perimeter of the triangle on the right.
A. 126.5 m B. 142.5 m C. 115.8 m D. 147.5 m
Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function where k is a constant and t is the time in years. If the current population is 40,000, in how many years is the population expected to be 100,000? (Round to the nearest year.)
A. 3 yr B. 8 yr C. 59 yr D. 5 yr
Provide an appropriate response.The simple interest formula is:
A. R = PIT B. I = PRT C. T = PIR D. P = IRT
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 2
B.
C.
D. x2 + 2