At a gas station where people can pay in cash or by credit card, 20% of people pay by credit card and 80% of people pay cash. a gallon of gas costs $4.00 if paid by card and $3.50 if paid by cash. what is the expected revenue for a gallon of gas sold at this station?

40 minutes

step-by-step explanation:

add the time and multiply by 2

the answer is c 150

step-by-step explanation:

1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5

how many friends does he have? i think some of the information got cut off in the problem.