The sum of n terms is given from the first term and the common ratio by

For your given values of a1=-11, r=-4, n=8, the sum of 8 terms is

Answer:
He made $108 in 9 hours
Step-by-step explanation:
I first multiplied 12 by 9 and got 108
Answer:36
Step-by-step explanation:
18×2= 36 because if each got halfed, each half would equal one sandwich so there would be 36 sandwiches
Answer:
x&y just cancel out for 7
x and y should both be 3
Step-by-step explanation:
its the best choice