After shopping for school supplies, martin came home with $4. he bought a pack of pens for $6, a calculator for $12 and a notebook for $3. how much money did he start with?

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Equation for the calculation double 2 and then add 5