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Kisachek [45]
2 years ago
9

PLEASE HELP PLEASE PLEASE

Mathematics
2 answers:
Monica [59]2 years ago
8 0

9514 1404 393

Answer:

  f(x) = {0, x≤ 1; 4(x -1), 1 < x ≤ 6; 2.5x +5, x > 6}

Step-by-step explanation:

The hourly rate gives you the slope of the function in the relevant interval. The added constant is chosen to make the function continuous.

That is, at 1 hour, the charge is zero, so the next segment (4x+b) must have a value of b that makes the charge for 1 hour be zero. That will be b=-4.

Likewise, for more than 6 hours, the charge will be (2.5x+b), where b is chosen to make this expression match the charge for 6 hours. We know the charge for 6 hours is 4(6) -4 = 20, so b must match ...

  2.5(6) +b = 20

  b = 20 -15 = 5

The segment from 1 to 6 hours is f(x) = 4x -4.

The segment for more than 6 hours is f(x) = 2.5x +5.

_____

<em>Alternate solution</em>

Since the charge is zero for the first hour, the first segment could be considered to be charging only for hours after the first. That is, an alternate expression for hours 1–6 could be 4(x -1). Likewise, we could say the expression for hours more than 6 is 2.5(x +2).

Marta_Voda [28]2 years ago
3 0

Answer:

The top-left box should be 4x, and the bottom-left box should be 2.50x.

Step-by-step explanation:

Because the cost from 2 hours to 6 hours is 4 dollars per hour, it is 4x.

Likewise, because the cost over 6 hours is 2.50 dollars per hour, the cost is 2.50x.

Everything else seems fine.

Hope this helps!

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ryzh [129]
Answer: C $1.51

To solve this, start with a proportion. Put the CPI numbers on the left and the apple juice prices on the right.

You will have:

82.4/130.7 = 0.95/x

Cross multiply to solve and you will get the price of the juice is $1.51.
4 0
3 years ago
Read 2 more answers
What’s the value of X ???!!!!
Alexus [3.1K]

Answer:

Step-by-step explanation:

So since triangle jkl and wyz are similar angles j and w must equal each other, angles k and y must equal each other, and angles l and z are equal. So to find x just set 4x-13 equal to 71

4x-13=71

add 13 to both sides to cancel the -13 from the left

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and divide both sides by 4 to cancel the 4 on the left

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7 0
3 years ago
X=−12, y=−1/6<br> The equation is y= <br> .<br><br> When x=3, y= <br> .
Vera_Pavlovna [14]

Answer:

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Step-by-step explanation:

there

3 0
2 years ago
Arrange these numbers from least to greatest
iogann1982 [59]
A. -3/7 = -0.4286
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4 0
3 years ago
Enter an equation in point-slope form for the line.<br> Slope is 9 and (−3, −1) is on the line.
Korolek [52]

Answer:

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Step-by-step explanation:

Since the equation for point slope form is y-y₁=m(x-x₁)

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8 0
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