Answer:
A regression coefficient is the same thing as the slope of the line of the regression equation.
Step-by-step explanation:
The equation for the regression coefficient that you'll find on the AP Statistics test is: B1 = b1 = Σ [ (xi – x)(yi – y) ] / Σ [ (xi – x)2].
The answer is
C
Explaintion:
Plugging 3 into x will give you 36 and 36-37 equals -1 and since y=-1 that’s means that is your answer
Solving for x...

Times the

, both the numerator and denominator, by 8 to get the denominator to 16.
Times the

, both the numerator and denominator, by 4 to get the denominator to 16.
Then rewrite the problem,

now that the denominators are all the same, you can solve...
subtract the

from both sides
you should get

Multiply both sides by 16 (it'll cancel both the 16 out making it go away)
8x = 11
divide each side by 8 to have the x alone
<u>8x</u> = <u>11
</u> 8 8
<u>
</u> You should end with x =

or 1.375<u>
</u>
Answer:
4 6-packs would cost $14.40
8 6-packs would cost $28.80
1 juice would cost $0.60
Answer:
So we will be saving a total of $0.7 at new rate
Step-by-step explanation:
Given:
Original price =$ 0.69
New price = $ 2.75 per 5 switches
To find:
Saving = ?
Solution:
The original per price of the switch is given as = $ 0.69
Discounted price of 5 switches at $2.75
5 Switch price at original price = Original price * No of switches
= 0.69 * 5
= $ 3.45
Total saving at buying 5 switches = 3.45 - 2.75
=$0.7
So we will be saving a total of $0.7 at new rate