~19wa . Students were asked to write an algebraic expression for the sum of three consecutive natural numbers. One student wrote lX1l+x+lx+1l=3x. Another student wrote: X+lx+1]+[x+2]=3x+3 , Determine if both students are correct. Explain why or why not. Discuss the importance of identifying what the variables represent when using algebra to solve application problems. Explain what an algebraic expression is. How is an algebraic expression different from an algebraic equation? A student writes alel=labllaC). How do you respond? List several different ways variables are used. . Translate the following instructions into an algebraic expression: Take any number, add 3 to it, multiply the sum by 7, subtract 14, and divide the difference by 7. Finally, subtract the original number. Write the expression without and simplication. Then show steps to simplify the expression. . Refer to the 4"h grade student workbook page on page 431 of our textbook. Then explain how variables are used. . Noah has some white square tiles and some blue square tiles. They are all the same size. He rst makes a row of the white tiles and then surrounds the white tiles with a single layer of blue tiles (see textbook page 433). Explain how to determine how many blue tiles are needed to surround a row of 100 white tiles. Then explain how to determine an algebraic expression for the number of blue tiles needed to surround n white tiles