The first four terms of a geometric sequence are 7, 14, 28 and 56.

a. write a recursive formula for the sequence.

b write and explicit formula for the sequence.

c. find the 20th term of the sequence.

Can a three liter go in a half gallon

The sum of two numbers is 51 and the difference is 17. What are the numbers?

A parallelogram's area is given by the expression 4x2 + 2x + 6. The height of the parallelogram is 2x2. what is the base of the parallelogram?

A bucket of 10 white golf balls, 3 pink golf balls and 5 yellow golf balls. Jason selects 1 golf ball from the bucket at random. What is the probability that the golf ball he selects is white or pink?

Solve for x 5/7x + 1/7 = 63

Katie is shopping for soccer shoes on-line. Her favorite store charges shipping as 3% of the purchase price, with a minimum shipping charge of $3.00. For today's purchase of $65.

At a gas station, 50% of the customers use regular gas, 30% use mid-grade gas and 20% use premium gas. Of those customers using regular gas, only 30% fill their tanks.

Solve the linear system using the substitution method. x + 2y = 4 - x+y = - 7 How would you solve it?

The sides of a square are two to the power of four ninths inches long. What is the area of the square?

Find the area of each figure round to the nearest tenth necessary