Let nails 7/pound=N1
nails 3/pound=N2
let N1=x
N2=6
then total=x+6
7x+6*3=(x+6)*4
7x+18=4x+24
3x=6
x=2
so 2 pounds on Nails costing 7/pound must be added
According to the given table the line of best fit is
f(x)=4.54x+77.84
The term "line of best fit" describes a line that passes across a scatter plot of data points and best captures their connection. Statisticians often utilise regression analysis software or manual computations to arrive at the geometric equation for the line using the least squares approach. A straightforward linear regression study of two or more independent variables will provide a straight line.
Hence, as asked by the question we need to find the time at which the tempurature will become 100°C.
To find that let us put f(x)=100 and find out the value of x for which it is satisfied.
4.54x+77.84=100
⇒
⇒x≈5
Therefore the time at which the tempurature is 100°C is 5 minutes.
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Answer: $76,000
<u>Step-by-step explanation:</u>
State Income Tax = Salary × Income Tax Rate
3040 = Salary × 0.04
<u> ÷ 0.04 </u> <u> ÷0.04 </u>
76,000 = Salary
YOUR ANSWER IS : $17.60
Because—— she first bought 2 pumpkin slice lattes for 4.50 EACH so that would be 4.50 time 2, then you would add another 4.20. And finally add another 2.80. After you add all those numbers you will have $16. But you need to find a 10% tip. So divide the total (16 in this case) by 100. After doing this you will have 1% of your total. But you need 10% so you will get that 1 percent (0.16) and multiply it by 10. You will then get $1.6. So you now will add $16 and