$565+$65= 630
630/30 would be 21
it would take him 21 weeks to pay off his sister and buy the bike
I think it’s either 4 or 20
5 x 4 =20
6 x 4 =20
To find the sum of an infinite geometric series having ratios with an absolute value less than one, use the formula, S=a11−r, where a1 is the first term and r is the common ratio.