posted by .

the water level of a river is 50 feet. After one day,the water level has decreased to 38,5 feet. After two days, the water level is 37 feet,and after three days,the water level is 35.5 feet. write an equation to represent the water level,L after d days.

water level=-1.5d+40 for d=1,2,3,...

nothing

A BOOK HOLDS 7.75 LITERS OF WATER
HOW MANY WATER DOES IT HOLDS

## Similar Questions

1. ### geometry

At the marine park, one of the aquariums is shaped like a rectangular prism. The inside dimensions are 22 feet long, 9 feet wide, and 7 feet high to the water line. 9 ft 22 ft 7 ft Which equation could be used to find the volume of …

the water level of a river is 50 feet. After one day,the water level has decreased to 38,5 feet. After two days, the water level is 37 feet,and after three days,the water level is 35.5 feet. write an equation to represent the water …
3. ### AP calculus AB

Water pours out of a conical tank of height 10 feet and radius 4 feet at a rate of 10 cubic feet per minute. How fast is the water level changing when it is 5 feet high?
4. ### calculus

A trough is 12 feet long and 3 feet across at the top. It ends are isosceles triangles with a height of 3 feet. If water is being pumped into the trough at 2.5 cubic feet per minute, how fast is the water level rising when the water …
5. ### calculus

my circular swimming pool has a 29 foot diameter and is 8 feet tall. at the beginning of the summer i need to fill the pool with water. the flow rate from my spigot into the pool is about 0.75 cubic feet per minute. how fast is the …
6. ### math

at 2 p.m., the level of the water in the pool was 10 feet. at 6 p.m., the level of water was 2 feet. find the constant rate of change in the water.
7. ### expressions

A tank is filling with water from a natural spring. two days ago the water was 10 feet deep. yesterday the water was 12 feet deep. Assume that the water depth continues to rise at the same rate after today. How do you write this expression
8. ### Calculus

Water is leaking from the bottom of a tank in the shape of an inverted cone having an altitude of 12 feet and a radius of 2 feet. If the water is leaking at the rate of 0.25 cubic feet per minute, how fast is the water level decreasing …
9. ### Math

The water level (y) in a tank oscillates between 4 feet and 10 feet. It takes 20 seconds for the water level to go from 4 feet to 10 feet and seconds to go from 10 feet to 4 feet. At time(t)=0 seconds, the water level (y) is 10 feet. …

a diver's elevation is -30 feet relative to sea level. she dives down 12 feet. what is her elevation after the dive?

More Similar Questions