Input this table of values into Desmos to write a quadratic regression equation that best fits the data set. Hint: use y_2~ax_2^2+bx_2+c
b) Use your regression equation and estimate the y value if x is 23. Show your work.
x y
15 423
17 398
19 308
20 255
21 297
25 365
29 401

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

10

step-by-step explanation:

7+3=10

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i believe the answer is the polygon, heptagon.