A bag contains 39 coins consisting of quarters and nickels. The total value of the coins is $6.35. Which systems of equations can be used to determine the number of quarters, q, and the number of nickels, n, in the bag?

What is the solution of sqrt x+2-15=-3

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years