8 pencils for$2.24 i need help with my math can some one help me with it

Write the equations in logarithmic form 7^3=343

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!

Given abc find the values of x and y. in your final answer, include all of your calculations.