Answer:
,
Step-by-step explanation:
$5 bill
If Rhonda has $13 and she has a $5 bill and 3 $1 bills, then she has
5 + 3(1) + x = 13
5 + 3 + x = 13
8 + x = 13
x = 5.
The last bill must be a $5 bill to equal the remaining $5.
16 triangles
(a) 64 days
(b) 2 phones calls
Hope this will help you
