A new popular midsize car has a retail price of $30,000. The midsize car's value M(t) is given by the exponential model where t represents the time in years. Identify the domain, in yearly intervals, that contains all the years the car's value is less than $1,000. PLS HELP ASAP

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books