1. write an equation for her earning for one day?
A. Y=42x +50
B. X=42+50
C.y=42x–50
D.x=42y–50

2. suppose she earned a total of 260 on a Monday, how long did she work for that day?
A. 5 hours
B. 4 hours
C. 6 hours
D. 7 hours

3.A store charges P15 per hour charging the battery of a cellular phone, plus P10 for the use of charger if the total cost of charging is a linear function, find cost of a two-hour charging
A. 30
B.40
C.50
D.60

paki sagot please ​