Which of those sequences is a geometric sequence

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.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Which graph represents the given linear function 4x+2y=3