Andre has 45 sheets of paper and needs to buy more. A store has 5 reams of paper, and each ream contains 500 sheets of paper. The number of sheets of paper Andre has after purchasing x reams is represented by a function. f(x)=500x+45 What is the practical domain of the function? all real numbers all integers from 1 to 5, inclusive all real numbers from 1 to 5, inclusive {545, 1045, 1545, 2045, 2545}