Write the recursive rule and an explicit rule for the geometric sequence 9,27,81,243

The cost of first-class postage in the United States increased approximately 5.4% in January of 2006 to 39 cents. What was the pre - January cost of the first-class stamp? Round your answer to the nearest penny.

How can Steve add 48 + 34 by making a ten?

How many significant figures does 2.4 have?

Give the first four terms (a0, a1, a2, and a3) of the sequence and then the first four terms of the infinite series for an =. write the infinite series in sigma notation.

Marvin scored 96, 93, 97, and 92 on four out of five math tests. In order to receive the highest grade in the class, he must obtain an average score of at least 95 for the five math tests.

What numbers have an absolute value of 2 1/2

The vertices of a hyperbola are located at (0-4) and (0, 12). The foci of the same hyperbola are located at (0-6) and (0, 14). What is the equation of the hyperbola? (x-4) 2 = 1 (y - 412_ * 2 = 1 (y - 4) 2 54 x2 = 1 -26 36

What is the surface area of the square pyramid?

Simplify the expression 7y + 4x + 4 - 2x + 8

Calculate the volume of the pyramid. round to the nearest hundredth