Answer:

Step-by-step explanation:
Given


Required
Represent as an equation;

Expand the above

<em>Recall that b = $10 ----given</em>
becomes


Answer:
1. 73.2
2. 90
3. 80
4. 80
Step-by-step explanation:
you will have to divide 3,600 by 50
The answer would be 32. take your 26 and add 18 then subtract 12. then rework it forward if you don't understand.
C=3.14 x 26
C=81.64
C=2(3.14 x 13)
C=81.64