What is a 2 digit number between 20 and 99

Which letters from the table represent like terms? a and b b and c a and d b and d

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint