How is the number 9 different in the numbers 7,923 and 2,490

Factor completely n4-1

Your budget $168 for lunch each month. Each lunch eaten at your workplace cafeteria costs you $7. write a rule to represent the amount of money left in your monthly budget as an explicit formula

The early version of a cell phone was 90 mm thick. The current version is about 10 percent thinner. How thick is the newer version?

A town with a population of 600 is expected to grow at an annual rate of 5%. Write an equation and find the number of years it is expected to take the town to reach a population of 900.

What value does f (x, y) = (x + 2y) / (x - 2y) approach as (x, y) approaches (0,0) along the x-axis? A. f (x, y) approaches - 1. B. f (x, y) has no limit and does not approach infinity or minus infinity as (x, y) approaches (0,0) along the x-axis.

Find all the solutions to the equation: |cos2x|=1/2

If p (x) = 2x^2-4 and q (x) = x-3, what is (poq) (x)

For his long distance phone service, Eric pays a $7 monthly fee plus 7 cente per minute. Last month, Eric's long distance bill was $19.04. For how many minutes was Eric billed?

Find the product of the complex number and its conjugate. 3 + 3i

If the general term of a sequence is 4 then the sequence is