How do I solve this?

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 volume of a cube is 8 in to the 3rd power. how long is each side?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined