Please help with these math problems +25 points

So basically, if it is under 1/2, its unlikely to occur, and if it is 1/2 or greater, it is likely.

Step-by-step explanation:

a is unlikely

b is unlikely

c is likely

d is unlikely

e is likely

f is unlikely

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