How do i know if a triangles are not similar

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

The monetary value earned for selling goods or services to customers is called a.) revenue b.) assets c.) money d.) accounting

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x