Answer:
b=9
Step-by-step explanation:
3.2=4/5b-4
7.2=4/5b
9=b
1.
25%
.3 + .2 + .15 + .1 = .75
1.00 - .75 = .25
2.
120 students
There are 400 total students
.3 * 400 = 120
4.
tennis-
.1 * 400 = 40 students prefer tennis
football-
.25 * 400 = 100 students prefer football
140 students like football/tennis
5.
400 students
There are four quarters in a whole
.25% = 100
100 * 4 = 400
1)n=2(56)
2)x=5
If u need to show work it would be like this****
(-1/13)-13x=-65(-1/13)
X=5
Factoring an expression involves rewriting the expression in simplier form
The factored expression of 
is 
<h3>How to factor the expression</h3>
The expression is given as:
Factor out 5x from the expression
Factor out y^2 from the expression
Hence, the factored expression of is
Read more about factorized expressions at:
brainly.com/question/723406
