Answer:

Step-by-step explanation:
Answer:
what is this meant to mean¯\_ಠ_ಠ_/¯
Answer:
Step-by-step explanation:
How to write numbers in standard form:
Write the first number 8.
Add a decimal point after it: 8.
Now count the number of digits after 8. There are 13 digits.
So, in standard form: 81 900 000 000 000 is 8.19 × 10¹³
I=prt.
I= $200 X 4% X 7.
I= 8 X 7.
I= 56. Her total interest earned was $56 :)