Why do we use variables and what's the significance of using a variable?

Is 4.8973 rational or irrational

Check ALL of the following Cartesian products in which the following elements belong: A = {1,3,5} B = {2,3} 1) (1,2) [] B x A [] B x B [] A x B [] A x A 2) (3,1) [] B x A [] B x B [] A x B [] A x A 3) (1,1) [] B x A [] B x B [] A x B [] A x A 4)

Find (ƒ - g) (x) for the functions provided: ƒ (x) = 4x + 3, g (x) = 3 - 7x

How many roots does this equation have? x^2=64 and - infinity < x < infinity

The product of j and 160, decreased by 289 is the same as n

Allie is building a patio. the patio will have 8 tiles in each of 13 rows. she has already built the center section with 4 tiles in each of 7 rows. How many more tiles are needed to complete the patio? Show your work?

Multiply monomials by polynomials - p 2 (p 2 - p-1)

Rider dribbles the ball down 1/3 of the basketball court on the first day of practice. Each day after that he dribbled 1/3 of the way more than he did day before. Draw number line to represent the court.

The difference of two numbers is 2 and and their product is 80

An insect traveled at a speed of 200 yards per hour for 60 minutes then it traveled for 15 minutes at twice its original speed. What is the total number of yards this insect traveled?