Before she went to the grocery store, jana had 4 tomatoes in her refrigerator. for the next 3 weeks she buys n number of tomatoes each week. which algebraic expression represents how many tomatoes she has at the end of three weeks?

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

where is the figure