Story problems don't know when to add subtract multiply or divide

What is the metric equivalent in meters to 1250 feet?

X^3 + 3x^2 + 2x given by x+1

If the perimeter is 560 yards what is the dimensions

The elements of a function of x are (-4,1), (-2,0), (8,-1). What is the domain of the function?

A fence must be built to enclose a rectangular area of 20 comma 000 ftsquared. fencing material costs $ 2 per foot for the two sides facing north and south and $4 per foot for the other two sides. find the cost of the least expensive fence.

Credit card A has an APR of 18.9% and an annual fee of $40, while credit card B has an APR of 19.7% and no annual fee.

Find the initial value. Y=3x

A school paid $16,800 to buy 16 computers for its computer lab. At the same rate, how much would two computers cost?

3x+2y=5 2x-2y=5 i got 2 so i kind of know how to do it but not that sure yet on how to do the whole equation

The mean of the age of students is 10 what does a large mean tell you