Write a proportion that could be used to solve for each variable.
then solve.
18 ounces in 6 bottles
x ounces in 24 bottles
a. 18/6 = x/24; x = 72 c. 6/18 = x/24; x = 8
b. 18/6 = x24; x = 82 d. 18/6 = 24/x; x = 9
( worth 30 pts! )

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

c

step-by-step explanation: easy math