Solve the question below

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

Perform the indicated operation and write the answer in the form a + bi. (-5 + 2) + (3 - 6i)