2.5 yards is $15 so you divide 15 by 2.5 and you would get the cost of each yard, which is $6 per yard :)
ΔABC ~ ΔADE
AC/AE = AB/AD
AC/(AC+15) = 8/18
18AC = 8(AC+15)
18AC = 8AC + 120
18AC - 8AC = 120
10AC = 120
AC = 120/10
AC = 12
A and B.
60/100 • p = 9 will give you 60 % of the test questions
0.6p = 9 will also give you 60% of the test questions
60 - p = 9 will take away 60 questions from the test making it wrong
60+p = 9 will add 60 questions to the test making it wrong
9+p = 60 will add 9 questions to the test making it wrong
a and g i think, hope this helps
