If abc dec, what is the value of x?

x = 8

x = 5

x = 4

x = 1

x = 2

answer:

me i beg !

step-by-step explanation:

hello from mrbilldoesmath!

answer:

  x = 116/55

discussion:

f(x) = 28                           =>

12^2 -55x = 28               => as 12^2 = 144

144 - 55x = 28               =>   add 55x to each sode

144 - 55x + 55x = 28 + 55x   =>

144 = 28 + 55x               => subtract 28 from each side

144 - 28 = 55x               =>

116         = 55x               =>

x = 116/55

you,

mrb