Ok, so after you do -8a+5a, you also have to do 6 -35, getting the equation
-29-3a
Answer:
The average rate of change of the cost of a pack is 22 cents per year.
Another name for the average <em>rate of change</em> is <em>slope</em>.
Step-by-step explanation:
The average rate of change of the cost of a pack (
), in monetary units per year, is equal to the change in the average cost of a pack (
), in monetary units, divided by the change in time (
), in years. Then, the average rate of change is:
![r = \frac{\$\,5.31-\$\,0.88}{2000-1980}](https://tex.z-dn.net/?f=r%20%3D%20%5Cfrac%7B%5C%24%5C%2C5.31-%5C%24%5C%2C0.88%7D%7B2000-1980%7D)
![r = \$\,0.22\,\frac{1}{yr}](https://tex.z-dn.net/?f=r%20%3D%20%5C%24%5C%2C0.22%5C%2C%5Cfrac%7B1%7D%7Byr%7D)
The average rate of change of the cost of a pack is 22 cents per year.
Another name for the average <em>rate of change</em> is <em>slope</em>.
| 5x - 6 | = -41....no solution because an absolute value cannot be negative
|7x + 13 | = 27
7x + 13 = 27 -(7x + 13) = 27
7x = 27 - 13 -7x - 13 = 27
7x = 14 -7x = 27 + 13
x = 14/7 -7x = 40
x = 2 x = -40/7
so basically, equation 1 has no solution and equation 2 has 2 solutions
Answer:true
Step-by-step explanation:
It would be -6 which is less that -9