C is the answer because 35 × 2 = 70 and sense this is a complementary angle it will add up to 90 degrees and 70 + 20 = 90 Hope that helps/explains well!
The y-intercept is 50 and it tells how many chocolates he starts off with. The slop is -4 because that is how many chocolates he gives out each week. y=-4x+50
