Guys please I need help in this

(0,1)

Step-by-step explanation:

A function is not differentiable if either:

- there is no tangent line or

- there is a vertical tangent line

There are no vertical tangent lines here, but at the point (0,1), there is no tangent line. To the left, the function is increasing, but to the right, the function is decreasing. It is impossible to draw a tangent line here, and as a result, the function is not differentiable at this point

b because it contains 40% of the possible results from the random list.  

0,1,2,3 v 4,5,6,7,8,9  

4 integers to 6 integers  

40% success vs 60% fail

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true