I need help with 2,4 and 6 I attached a image below

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76