Question

If the cost of a telephone conversation varies directly as the length of the time of conversation, and if the cost of six minutes is $0.90, what would be the cost for a nine-minute call?
$1.10
$1.20
$1.35

Answer 1

i can help

Answer 2

ok

Answer 3

first divide 90 by 15

Answer 4

ok

Answer 5

if you get 6 which you should you would know that every min is 15 cents so you would multiply 15 by 3 which would give you 45 so you would add .90+.45=1.35

Answer 6

d

Answer 7

and that is the answer

Answer 8

ok

Answer 9

can I get a medal

Answer 10

thankyou

Answer 11

your welcome