Please answer all for the points and brainliest if its wrong then repo thanks have a good day.

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station. he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

What is sin 7x/4 ? i need on this urgent trig