It's a non-constant linear function, so both the domain and the range are all real numbers.
It’s -10
Explanation: 8 x 5= 40
40/-4= -10
(x+5)² + (y - 6)² = 16
(x - h)² + (y - k)²= r² is circel centered at (h,k) with radius r.
If he is out of flour, and needs 2 cups for each pizza. He is making three so 2x3 is 6 cups total. 20-6=14
