Are you to combine the answer or are they 2 separate equations you need to solve for y?
Answer 3 is (0, 5)
Answer 4 is in comments.
yes sure, i learned this before so
1. a. make a proportion here, of percentage. 
if you cross multiply and divide you get 90%.
1. b. obviously the empty seats would be 10%.
2. a. proportion again, 
cross multiply then divide you ge 15%
3. 30% in decimal form is 0.3. multiply it then to the total amount, so 0.3 x 15 = 4.5
Answer:
1.-6
Step-by-step explanation:
I don't know how to do the second one but
BD = DC
x+8 = 3x+2
2x=-4
x=-2
-6+12
-6
Divide 120 by 4 and your answer will be: Rya can drive 30 miles on 1 gallons of gas.
