kamranmor1996

5 yoyos and 2 toy cars costs $10.64

4 yoyos and 4 toy cars costs $13.84

How much does 1 yo-yo cost and how much does 1 toy car cost?

 Let  . Evaluate the following limits.

  

= 

Thus the function f(x)f(x) is not differentiable at 8

A class of 30 students recently took a test. If 20 students scored 80, 8 students scored 90, and 2 students scored 95, then what was the class average (the mean) on this test?