To find the average rate of change, use the following formula:

a and b represent the values of the interval:

Simplify the original equation by combining like terms:


Plug the interval values into the f(x) equation:


Plug in these values into the average rate of change formula:

The average rate of change over this interval is
-11.
Um... i cant help if there are not any question...
Well you know that the amount of boys that voted for Danny has to be 123 - 55, so you do that and get 68, then the ratio of girls to boys is 55:68, and that can't be simplified anymore because 55 has factors of only 1, 55, 11, and 5, and that doesn't get you anywhere.
Answer: $17.1
Step-by-step explanation:
19% = 19/100 = 0.19
Convert to fraction
=19% of $90
=19/100 × 90
=0.19 × 90
=17.1
I hope this helps.