PLEASE HELP ME!! I DONT UNDERSTAND HOW TO DO THIS PROBLEM, and I need the correct answer

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.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?