A box of cereal states that there are 87 calories in a 3/4 cup serving. What is the unit rate for calories per cup? how many calories are in a 3 cups of cereal Please help me

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =