Can anyone help me with these two problems.
I’ll mark you as a brainliest.

How to solve a simultaneous equation involved with fractions?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?