Distinguish the second expression from the first expression 1) 6a + 7b, 2a + 3b
2) 9a + 11 + 15c, 5a + 3b + 6c

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

What is the value of x in the following equation? -3x-2=2x+8