How do I solve 39x-3y=21

Simplify. (22) - 3 i need this for a test guide

Tanisha wants to have $1000 in her bank account in 5 years. How much money should she deposit if her account earns 6% interest which is compounded 2 times per year?

Jerry had k pencils. darcy and leonard then gave jerry an additional x pencils each. which expression could represent the number of pencils jerry has now?

2 1/4 cups of cream for 5 people. How much cream will you use for 8 people?

The sum of 3/4 and 18/19 is closest to 0, 1, 2

One of Edna's grandchildren, Toby, plans to spend 4 years in college. The university awards him a scholarship to cover his tuition, but he will need an additional $8,000 for other expenses over the four years.

Yvonne bought 10 yards of fabric to make bandanas for her basketball team each bandana requires 1/3 yard of fabric how many bandanas can she make?

What's the sum of - 4 and 14

If a cube has a volume of 64 cubic units how long is its edge?

Which of the following are solutions to the equations below? x^2+x-20=0