Answer:
Step-by-step explanation:
<u>Item 1:</u>
Discount = Original price - discount price
= 22.50 - 13.50
= $ 9
Discount percentage = 
= 40%
Discount percentage = 40%
Tax = 14.31 - 13.50 = $0.81
Tax% = 
= 6%
Tax percentage = 6%
<u>Item 2:</u>
Tax = 6% of 16.20
= 0.06 * 16.20
= 0.972
Tax = $ 0.97
Total price (including tax )= 16.20 + 0.97 = $ 17.17
x = $ 17.17
<u>Item 3:</u>
Discount = 40% of 32.50
= 0.4 * 32.50
= $ 13
y = 32.50 -13
y = $ 19. 50
Tax = 6% of 19.50
= 0.06 * 19.50
= 1.17
z = 1.17 + 19.50
Z =$ 20.67
Answer:
4.038
Step-by-step explanation:
The simple regression model is:
, then 
.
The statistic calculated for the hypothesis test of statistical significance, for the slope, in a simple regression model is given by:
with 
the slope estimator, 
the value of slope in the null hypothesis and 
the standard error of the slope. Thus,
745 is the answer
basically,
775 - 15 l-2l (absolute value = positive number)
so
775 - 15 (2)
MULTIPLY -15 X 2 -----> -30
775 - 30
= 745
There are two methods to do this:
1. 2(x + 1) = 38
2*x + 2*1 = 38 (Expand the bracket)
2x + 2 = 38
2x = 36 (Subtract 2 from both sides)
x = 18 (Divide each side by 2)
2. 2(x + 1) = 38
(x + 1) = 19 (Divide each side by 2)
x = 18 (Subtract 1 from each side)
