Answer:
b=2
Step-by-step explanation:
Changing the y-intercept would move the graph down or up.
So we have the equation 
.
We want to move the graph down 3 units. We want the y-intercept to be 3 units lower than what is was. Since 5-3 is 2, then the new y-intercept is 2.
The equation would then be 
.
So b=2.
10 15 20 25 30....etc hope this helps you!!
Answer:
Combine the terms with the same variable
Step-by-step explanation: so 9x-4x+9x-4x
Remove parenthesis on m-2 because you don't need to distribute ( you have an invisible 1, but it won't change the values bc it's a one) Combine your like terms on the side you removed the parenthesis. m-2-5 -> m-7. Now on the other side distribute the 2 to the terms in the parenthesis. once you've done that your equation should look like this 8- 2m +8. now lets look at th full equation. m-7=8-2m+8 move the -2m to the other side, by adding. you now have an equation like this 3m- 7=16. move the -7 to the other side by adding. 3m=23. divide 23 by 3. you're answer should be m= 23/3
its best to leave your answer as a fraction.
Hope this helped. (:
80% of 20 is 80/100 x 20 = 16
So, kelly has used 16 stamps, and has 4 left
