If one box of 12 pencils are for $1.69. How much would it be if you just wanted two pencils?

If one box of 150 index cards are for $2.99. How much would it cost if you just wanted 30 index cards?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

How can constraints be used to model a real-world situation?

Proving the parallelogram diagonal theoremgiven abcd is a parralelogam, diagnals ac and bd intersect at eprove ae is conruent to ce and be is congruent to de