Answer:
Use the inflection points to set up intervals. Substitute a value into each interval to find where the curve is concave up or down.
The graph is concave up
Answer: 17%
Step-by-step explanation:
I think they're saying your expenses for everything this month were $500, and of that $500 you spent $85 on clothing.
Let's represent the percentage spent on clothing as "
". Then


which means

(If you don't understand how I moved the 100, just think about it for a bit.)
So the answer is
.
Answer:
4/9
Step-by-step explanation:
2/3 * 2/3 is 4/9
2/3 of 3 is 2
subtract 2 from that and you get 0
4/9+0=4/9