Can somebody tell me how to solve these kind of problems?

A certain forest covers an area of 1700km^2. Suppose that each year this area decreases by 5.75%. What will the area be after 8 years?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

(03.03 mc) choose the graph below that correctly represents the equation 2x + 4y = 24. (5 points) select one: a. line through the points 0 comma 6 and 12 comma 0 b. line through the points 0 comma negative 6 and 12 comma 0 c. line through the points 0 comma negative 12 and 6 comma 0 d. line through the points 0 comma 12 and 6 comma 0

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?