For every dime spent, davida receives 15 food pebbles to feed the animals in the petting zoo. davida has fed the animals a total of 135 food pebbles. write and solve an equation to find the number of dimes davida spent t the petting zoo

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}