More of me but kinda of Young me♥️

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

What is it called when someone gets sick from eating food contaminated with germs or toxins? a. potentially hazardous food b. ptomaine poisoning c. foodborne illness d. raw food

What principle of light’s behavior can be used to make a far away object appear closer and also make a small object appear larger? a. reception b. absorption c. refraction d. transmission