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borishaifa [10]
3 years ago
7

Which quadratic function best fits this data?

Mathematics
1 answer:
Vika [28.1K]3 years ago
3 0

The data has a peak at x=5, so we expect it to be modeled with a parabola that opens downward. That is the x² coefficient will be negative.

For x=1, the third choice gives a better approximation to (x, y) = (1, 32) than does the first choice. It is appropriate to choose

... y = -11.41x²+154.42x-143.9

_____

The quadratic regression function of a graphing calculator confirms this choice.

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Pleses help me thank you
OLEGan [10]

when solving for y

y = -7x/3-6

 so y does not vary directly with x

 the answer is no

4 0
3 years ago
Frodo and Sam are photographers. They take pictures of seniors for high school yearbooks. They charge a standard fee for taking
liubo4ka [24]
(0,15)(1,19)
slope = (19 - 15) / (1 - 0) = 4

y = mx + b
slope(m) = 4
(0,15)...x = 0 and y = 15
sub
15 = 4(0) + b
15 = b

y = 4x + 15....so ur rule is : F(s) = 4s + 15
7 0
3 years ago
681/4 i dont know this
ankoles [38]

Answer:

170.25

Step-by-step explanation:

It's a bit tricky to do not on plain paper, but here:

Just assume the long division symbol looks right

  _1_7_0_.25

4 ) 681

    -4

     2 8

     -2 8

          0  1

The remainder is "1", so you'll just have to write that as either a fraction or decimal, whatever is assigned.

Fraction: 170 1/4

Decimal: 170.25

7 0
3 years ago
Read 2 more answers
Which equation matches the graph shown?
pogonyaev

Answer:

  • C. y = 4x - 3

Step-by-step explanation:

<u>The line has a positive slope and negative y-intercept.</u>

  • m = 4, b = - 3

This is only matched by a choice C

4 0
2 years ago
Read 2 more answers
What is the total weekly pay for a person earning $9.00 an hour and working only 8 hours a day for 5 days?
melomori [17]
First you woyld find how many hours total he worked.
5 \times 8 = 40
Then take the number of hours and multiply by the pay earned per hour.
40 \times 9 = 360
They would make $360 per week.
6 0
3 years ago
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