Answer:
$2.00
Step-by-step explanation:
2.50*.20=.5
2.50-.5= $2
Answer:
The shirt cost $10 since 20% of 10 is 2 resulting in the $8 final cost
Step-by-step explanation:
You need the first term and the common ratio.
Your calculator probably only evaluates in base 10 (ln is base e but we won't use that today)
so

where c is the new base
so if you wanted in base 10

using calculator, that is about 2.16096