A geometric sequence is given. Find the common ratio and write out the first four terms.{dn} =

Find the vertex, focus, and directrix of the parabola with the given equation.(x – 1)2 = 20(y – 4)

Find the nth term and the indicated term of the arithmetic sequence whose initial term, a, and common difference, d, are given.a = 6; d = -2an = ?; a15 = ?

Solve the problem. Round your answer to three decimals.What annual rate of interest is required to double an investment in 6 years?

Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.10log 30 – log 5

Find the domain of the function.f(x) = log10

Solve the equation.2 + log3(2x + 5) – log3 x = 4

Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log18 3 + log18 6

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