Answer:
Package A :
y = $12 + 0.12x
Package B:
y = 0.20x
Step-by-step explanation:
Given :
PACKAGE A:
Monthly Fee = $12
Charge per text = $0.12
PACKAGE B :
Monthly Fee = $0
Charge per text = $0.20
Let the number of text messages sent in a month be represented as x ;
TOTAL MONTHLY FEE, y :
package A :
y = $12 + 0.12x
Package B :
y = $0 + 0.20x
y = $0.20x