Answer:
14x - 2
Step-by-step explanation:
([7x] { -1}) ([7x] {- 1})
Add together
Answer: $20
Step-by-step explanation:
To calculate 20% tip on a bill of $95.79, divide 20 by 100, then multiply by $95.79
=20/100 x 95.79
=0.2 × 95.79
=$19.558
To the nearest dollar is $20, since 0.558 is greater than 0.5, we round up.
The answer is $12.5 for 10 bottles
Answer: 603
<u>Step-by-step explanation:</u>
Average rate of change is the slope
over the given interval.
Interval [7, 9] is between x = 7 and x = 9. Use the table to see that the coordinates are (7, 1852) and (9, 3878). Then use the slope formula:
![m=\dfrac{y_2-y_1}{x_2-x_1}\\\\m=\dfrac{3878-1852}{9-7}\\\\.\quad =\dfrac{2026}{2}\\\\.\quad = 1013](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%5C%5C%5C%5Cm%3D%5Cdfrac%7B3878-1852%7D%7B9-7%7D%5C%5C%5C%5C.%5Cquad%20%3D%5Cdfrac%7B2026%7D%7B2%7D%5C%5C%5C%5C.%5Cquad%20%3D%201013)
Interval [4, 6] is between x = 4 and x = 6. Use the table to see that the coordinates are (4, 358) and (6, 1178). Then use the slope formula:
![m=\dfrac{y_2-y_1}{x_2-x_1}\\\\m=\dfrac{1178-358}{6-4}\\\\.\quad =\dfrac{820}{2}\\\\.\quad = 410](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%5C%5C%5C%5Cm%3D%5Cdfrac%7B1178-358%7D%7B6-4%7D%5C%5C%5C%5C.%5Cquad%20%3D%5Cdfrac%7B820%7D%7B2%7D%5C%5C%5C%5C.%5Cquad%20%3D%20410)
Next, find the difference between the slopes above:
[7, 9] - [4, 6]
= 1013 - 410
= 603