For which values of x is the function y = 5 / (x-4)(x+5) not defined? select all that apply.
a) -5
b) -4
c) 4
d) 5

yes

yes yes yes

a

step-by-step explanation:

its wrong

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

open side up . . 1/50 . . 2%

closed side up . . 5/50 . . 10%

landed on side . . 44/50 . . 88%