Sheena received a gift card for $50. she has already used it to buy a lamp for $39.99. the equation 39.99 =50 can be used to find the amount x that is left on the gift card. what is the solution of the equation?

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

Combine like terms to make a simpler expression 3z+z

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?