Expression for "the sum of a and 4'

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction

10x − 5y + 14 = 0 whats the answer pls

Agroup of five people go out to eat and buy appetizers and main dishes they decide to split the bill so each person pays 20% of the total cost appetizers are $5 and main dishes are $10 write an expression to show how much each person pays explain it with how to solve the problem