Question

What is the value of y in the equation 6.4x +2.8=44.4 , when x=3 ?

y=

Answer 1

y=3.15

Explanation:

I am assuming you meant 2.8y in your equation.

Plug in for x

6.4(3)+2.8y=44.4

6.4*3=19.2

So now 19.2 + 2.8y = 44.4

44.4-19.2=25.2

25.2/2.8=3.15

Meaning Y=3.15