29.) This is simply interpreting the linear function. The function: 96+2.1x a.) The 96 is what you start with from the beginning. So, we know Rachel weighed 96 ounces when she was born. b.) Again, interpretation. The 2.1 is the slope, or the change in the line. So we know that Rachel gains 2.1 ounces each day. 30.) For this one, you just have to plug 9 into the equation for x.
The answer is E because if you take 60 pounds of hazel nut coffee you spend 420$ and that would leave 30 pounds of vanilla left which equals 120$ and if you and those two numbers you get the sum of how much money she spent on coffee.
