The distance a lookout in a submarine can see is related to how high the periscope is above the surface of the water. The height (in feet) of the periscope can be modeled by the function h=:48dwhere d'is the
distance (in miles) the lookout can see.
How many miles away is the submarine when the periscope is 4 feet high?

You use math in day-to-day routines when grocery shopping, going to the bank or mall, and while cooking. how do you imagine you will use math in your healthcare career?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4