7% of $45:
= 0.07 * 45
= 3.15
Increase = $3.15
Answer:
Step-by-step explanation:

Answer: They can recieve about 2.
Exact answer: 2.5
Step-by-step explanation:
If you divded 100 by 40, you get 2.5
Since there are 20 students in each AM and PM classes. you add 20 and 20, which is 40, then you divided by 100 which is 2.5
The percent of variation is 85.1%. If you enter the numbers into a calculator and store the regression equation, it will be the r^2 value when calculated.