A student has a $10 bill, a $50 bill, a $5 bill, and a $100 bill. a. If the student must select at least one bill, and the student may select up to all of the bills, how many different sums of money could the student make? b. In part (a), remove the condition "student must select at least one bill." How many sums are possible? a. The number of possible different sums, provided at least one bill must be selected, is (Type a whole number.) b. The number of possible different sums after removing the condition "student must select at least one bill" is (Type a whole number.)