Two ships leave the same port at the same time traveling in straight paths in a direction that makes a 48° angle with
each other. One ship travels a rate of 15 miles per hour and
the other at 10 miles per hour. How many miles are the
ships apart after 4 hours?

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?