Answer:
23.125$
Step-by-step explanation:
you have to divide the total amount of money by the total amount of people 92.50$/4=23.125$
147
Step-by-step explanation:
180-33=147
First we will evaluate: ( substitution: u = x² - y², du = - 2 y dy )

=

( than plug in x and 0 )
=

=
= 1/3 x³ ( then another integration )

= 1/3 * 1/4 =
1/12
I think it is 55 because 85-30 = 55
Hope this helps! :D