HELP PLEASE WILL MARK BRAINLIEST!!

please answer the question in the photo provided and explain! please actually help me :(

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.

2.5 milligrams is equivalent to how many grams

Factor and solve to find roots x squared -x - 90 =0