Answer:
it is a 25% decrease
Step-by-step explanation:
21:28*100 =
(21*100):28 =
2100:28 = <em>75</em>
100 - 75 is 25
Your answer is <em>25%</em>
0,1,2,3,4,5
You can not buy more than 5 books because you'd have a negative amount of money. So 0,1,2,3,4,5 are the possible values for b.
Answer: You can't solve for y or x, but you can graph it.
Hope this helps!
the last one
