Answer:
x = 7
Step-by-step explanation:
all we know is that she had 1 brownie at the end, in the end she gave half her brownie to tyler, so add one who will get 1 1/2, before that she split her brownies between her friends, so multiply 1 1/2 by 2 and you will get 3, before that she gave 1/2 a brownie to Kiran, so we would add 1/2 to 3 and get 3 1/2, before that she first split it in half for a her friends, so at last, multiply 3 1/2 by 2 and you will geet 7 as your final answer.
B. You can only have one becase your answer has to be greater then one and less then 10. So it cant be 1 or 10 it has to be 2-9
The anwser is the first one you put , -4 is below zero
Divide both length and width by the dialtion factor and that will be the dimensions of the new rectangle. 2.5714in by 3.4286in. Round as needed
The equation of the regression line is 
=9.1006+(-0.2157)x and the point prediction of ammonium concentration for 25ml/h is =3.7081
<h3>What is meant by regression line?</h3>
A regression line is an approximation of the line that describes the true, but unknown, linear connection between two variables. The regression line equation is used to predict (or estimate) the value of the response variable from a given value of the explanatory variable.
In statistical modeling, regression analysis is a collection of statistical techniques for estimating the associations between a dependent variable and one or more independent variables.
a) =β₀+β₁x
Where,
β₁=
/
-------(1)
Where,
= -341.959231
1585.230769
By substituting these values in equation 1 we get,
β₁= -0.2157
β₀= -β₁x
Where,
=∑
/n
∑=52.8
n=13
Then,
=4.0615
=∑
/n
∑=303.7
n=13
=23.3615
β₀=4.0615-(-0.2157)(23.3615)
=9.1006
Therefore, β₀=9.1006
The regression equation is =9.1006+(-0.2157)x
If x=25,
=9.1006+(-0.2157)(25)
=3.7081
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