In total $130 is there in the piggy bank.
Given that, in a piggy bank, there are four $10 bills and eighteen $5 bills.
We need to find out how much money is there in the piggy bank.
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Let the total amount of money in the piggy bank be x.
So, x=4×10+18×5
=40+90
=$130
Therefore, in total $130 is there in the piggy bank.
To learn more about an equation visit:
brainly.com/question/14686792.
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