3x+y=5 2x-2y=-2 solving systems of equations

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2