Can someone help me pls? I'm confused.

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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.

Describe how making an ‘and’ compound sentence effects your solution set