TSI Math 2.0 Practice

A history class is made up of 12 tenth graders and 9 eleventh graders. The tenth graders averaged 77 on the midterm exam, and the eleventh graders averaged 91 on the midterm exam. What was the average grade on the midterm exam for the entire class?

• 82

• 83

• 84

• 85

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Which of the following is NOT equivalent to  $\left(3x-12\right)\left(x+4\right)$ ?

•  $3\left(x^2-8x+16\right)$  

•  $3\left(x^2-16\right)$  

•  $3x^2-48$  

•  $3x\left(x+4\right)-12\left(x+4\right)$  

Tags

CCSS.6.EE.A.4