The total cost of 15 gallons of regular unleaded gasoline and 10 gallons of premium unleaded gasoline is $35.50. premium unleaded costs $0.20 more per gallon than regular unleaded. what is the cost per gallon of each type?

Step-by-step explanation:

15r + 10p = 35.50

p = r + 0.20

15r + 10(r + 0.20) = 35.50

15r + 10r + 2 = 35.50

25r = 35.50 - 2

25r = 33.50

r = 33.50 / 25

r = 1.34 < regular is 1.34 per gallon

p = r + 0.20

p = 1.34 + 0.20

p = 1.54 < premium is 1.54 per gallon

a=r

d=q

c=p

b=s

hope this !

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.