Mia is factoring the polynomial x2 + 4x - 12. she uses the
steps shown.
in which step did mia make an error?
x2 + 4x - 12
step 1
step 2
step 3
step 4
step 1
x2 +6x - 2x - 12
step 2 |(x2 +6x) = (2x+12)
step 3
x(x + 6) - 2(x+6)
step 4
(x + 6)(x+2)

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .

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