If AB + BC = 24 and AB = 10, then 10 + BC = 24 is an example of the? Symmetric Property

Substitution Property

Addition Property

Reflexive Property

Given that,

AB + BC = 24 and AB = 10, then 10 + BC = 24.

To find,

The above expression is an example of what?

Solution,

We have,

AB + BC = 24  (1)

and

AB = 10

Substitute AB = 10 in equation (1).

10+BC=24

BC = 24-10

BC = 14

Therefore, we have used Substitution Property. Hence, the correct option is (2).

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x