How do you do 4x+2=14

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount