Sasha flips a coin. If she gets heads, she wins $4. If she gets tails, she loses $3. What is her
expected value of a coin flip?

You can't tell 100%

Step-by-step explanation:

There's a 50% chance of her loosing money and a 50% chance of her gaining money

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x