need help on algebra question

[norris]

a certain mountain has an elevation of 19.563 feet. in 1913 the glacier on this peak covered 4 acres. by 2002 this glacier had meltedto only 1 acre.a) assume that this glacier melted at a constant rate each year. find this yearly rate.b) use your answer from part a to write a linear equation that gives the acreage a of this glacier t years past 1913. the yearly rate of change is what acres/ year type an integer or decinal round to the nearest thousandth what is the equation that gives the acreage of the glacier t years after 1913 A= what

 

[norris]

need more

so whats the yearly rate of change in acres/year it has to be a integer or a decimal rounded to the nearest thousandth

 

[norris]

heres another one plz help

a certain region is losing about 25 million acres of rain forest each year. a. find the linear function f that calculates the change in acres of rain forest in million y years. b. find f(7) and interpret the result. f(x) = what type an expression using x as the variable. f(7)= simplify answer interpret the result after how many years the region can expect to have lost about how many million acres of rain forest

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