Question

a certain mountian has an elevation of 19,197ft. In 1925 glacier covered 5 acres. by 2004 the glacier had melted 1 acre. Find the yearly rate

Answer 1

The sentence about elevation is just there to trick you.

Answer 2

Read this part carefully:

In 1925 glacier covered 5 acres. by 2004 the glacier had melted 1 acre. Find the yearly rate

Answer 3

How many years are there from 1925 to 2004?

Answer 4

79 yrs

Answer 5

Correct

Answer 6

And over the course of 79 years the acres went from 5 to 1. How many acres did it lose?

Answer 7

4

Answer 8

Yes!

Answer 9

So in 79 years it lost 4 acres

Answer 10

Or in other words, 4 acres per 79 years

Answer 11

but how do i figure the yearly rate

Answer 12

"per" is the same thing as a / sign. So we can write