Thomas invests $500 in a bank cd. the interest is 2 and it is compounded quarterly. how long will it take before his investment reaches $1000.
a. 30
b. 25
c. 40
d. 35

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.