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11Alexandr11 [23.1K]
3 years ago
15

What is the answer to this question

Mathematics
1 answer:
Soloha48 [4]3 years ago
7 0

(0,2),(-2,-1),(2,5)

-3x+2y=2

+3x    +3x

2y/2=3x+2/2

y=1 1/2x+2

Plug in numbers for x then solve for y

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A painter charges an initial fee of $50 and $30 for each hour of labor. Write a linear function to determine the total cost. How
il63 [147K]
The initial fee of $50 is essentially the y intercept because this is the value when x = 0 (x is the number of labor-hours). So b = 50.

The slope is m = 30 because each increase of 1 hour leads to the cost bumping up by 30 dollars. In other words, slope = rise/run = (change in cost)/(change in hours) = 30/1

So we plug m = 30 and b = 50 into the y = mx+b formula to get y = 30x+50

Replace y with f(x) to get f(x) = 30x+50

The linear function for the cost is f(x) = 30x+50

Note: Some books may use other letters (instead of x and f(x)), but the idea is still the same

Once you know the cost function, you replace x with 4.5 to find the amount it will cost to have a painter work for 4.5 hours.

f(x) = 30x+50
f(4.5) = 30*4.5+50
f(4.5) = 135+50
f(4.5) = 185

It will cost 185 dollars to have the painter work for 4.5 hours
7 0
3 years ago
What percentage of times are between 6 and 22 hours?<br> 16%<br> 68%<br> 95%<br> 99.7%
allochka39001 [22]

Answer:

16 percent of times are between 6 and 22

6 0
2 years ago
Help me pleasee (and no I’m not gonna follow u if u ask just help)
erica [24]

Answer:

option B is correct -7 is the answer

Step-by-step explanation:

=4⁴-3³.(12-3)-20

=256-27×(9)-20

=256-243-20

=256-263

=-7

hope it will help ^_^

4 0
3 years ago
Read 2 more answers
How do I solve this?
Furkat [3]

Answer:


Step-by-step explanation:


8 0
3 years ago
What’s bigger 10 to the -11 power or 10 to the -9 power ?
Stella [2.4K]

Answer:

I believe its 10 to the -9th power.

Step-by-step explanation:

5 0
3 years ago
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