If it is 8: 50 a. m., what will the time be 4 hours and 20 minutes later?

1: 20 a. m.
12: 30 a. m.
1: 10 p. m.
12: 30 p. m.

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?