Model problem. Exercise #1. Prove that ABCD is an isosceles trapezoid if A (-3,-4), B (-4,-1), C(0,3), and D(3,2).

What is the difference between the equations of a vertical and a horizontal line?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.