Question

The table shows the weekly profit in dollars earned from the sale of pastries at seven different prices.
The data can be modeled by a quadratic function.
Write a function that best models this data.
1. Enter your table in the calculator by pressing + in the top left corner.
2. In the box below the table, you will type y1 ~ ax1^2 +bxl +c which will automatically turn into this on the calculator: y~ax?+bxy+c
3. Plug a, b, and c into the function to get your equation for the set of data.
y=
2.25
2.50
2.75
3.00
3.25
3.50
3.75
149.75
166
174.75
176
169.75
156
134.75
Submit

Answer 1

y = -60x^2 + 350x - 334

(If you enter the table and do a quadratic fit y1 ~ ax1^2 + bx1 + c, you'll get a = -60, b = 350, c = -334.)