What is the best first step for solving the given system using substitution while avoiding fractions? 2x+6y=7 6x+18y=24 a. solve for x in the first equation. b. solve for y in the first equation. c. solve for x in the second equation. d. solve for y in the second equation.

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Abe is a triangle. can you use the sss postulate or the sas postulate to prove triangle abc = triangle aed? by sss only neither apply both apply by sas only

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!