He raised $736.
One way is to multiply 640 x .15 = 96
Add 96 + 640 = 736
Answer:
line of best fit: y = -2.9114x + 46.569
Step-by-step explanation:
Plugging in your table into Excel, it turns out that y = -2.9114x + 46.569 provides a better fit of the data points into the line. Please see the attached image for details.
Hope this helps.
Z = 17.
2(4z -8) = 120
8z -16 = 120
z -2 = 15
z = 17