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+45What is the practical domain of the function?
a. all integers from 1 to 5, inclusiveb. all real numbers from 1 to 5, inclusivec. {545, 1045, 1545, 2045, 2545}d. all real numbers