Cora bought 80 feet of cable for $18.40. She needs 20 more feet. If the unit price is the same, how much will she pay for the extra 20 feet of cable?
She will pay an extra $

Step-by-step explanation:

20ft($18.40/80ft)=$4.60

$4.6

Step-by-step explanation:

Use 18.40 and 80. if $18.40 is 80 feet, divide 18.40 by 4 to get 4.60. Now you know that you got 4.60, see if you can add 4.6 four times to get to 18.4. (You can.) So, 20 feet is $4.60 or $4.6.

i got 142 as my answer

step-by-step explanation:

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation: