f(x) = 2x^2 - x - 10
Part A:
x-intercepts: (-2,0), (5/2,0)
Part B:
The vertex is the minimum
vertex: (1/4, -81/8)
Part C:
A:
x: -2, -1, 1/4, 1, 2
y: 0, -7, -81/8, -9, -4
B:
Drawing a scatter plot for the given values on a graphing calculator, we have;
<h3>How can the function that best represents the data be found?</h3>
The values are;
Day; Running time
1; 8.2
2; 8.1
3; 7.5
4; 7.8
5; 7.4
6; 7.2
7; 7.1
Entering the above values in a graphing calculator, we have;
- The slope of the line of best fit = -0.19
- The x-intercept = 45
Therefore;
- 0 = -0.19 × 45 + y-intercept
0 = -8.36 + y-intercept
The equation found using the statistics function for scatter plot on a calculator is therefore;
Learn more about scatter plots here:
brainly.com/question/2605413
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If you use 7 GB of data, you will spend $75.
I would switch my plan because in the end, the new plan would cost less than the original plan by approximately $10.
If you use 10 GB on your old plan, you would spend $90 monthly. but with the new plan you would only be spending $80.
I hope I was able to help.
E.V. = P(A) x V (A) + P(B) x V(B)
.12 x $7 + .48 x $3 = 2.28
Yes, on average you'll earn $.28 per game.
Hope this helps!!