I'm guessing this is a question about interest rates? If you have $20 that increases by 4% in one year, you need to multiply 20 by 1.04. This gets you $20.8.
If you are talking about compound interest, we will take this number and multiply it again by 1.04 for the second year. 20.8 x 1.04 = $21.632.
If it is instead simple interest, we will simply add another .8 dollars for each year, instead of getting 4% interest compounded every year onto the new value. This gets you $21.6.
The answers are 5 x (80 x 7) and 80 fives plus 7 fives
If you use photomath it will give you the answer and the steps to solve its a great app.
Answer:
j + 5 = s
a = l + 3
Step-by-step explanation: