How do I solve these ?

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?

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

What is the measure of angle 1? a.28 b.152 c.168 d.64