Question 1038093

Given the following expression 4 square root 7x , what value must x become in order for the expression to simplify to 20 square root 7. 
a. 5 
b. 25
c. 1
d. not possible 
<pre>{{{4sqrt(7x) = 20sqrt(7)}}}
16(7x) = 400(7) --------- Squaring both sides
112x = 2,800
{{{x = matrix(1,1, "2,800")/112}}} or {{{highlight_green(matrix(1,3, x = 25, "(CHOICE", "b)"))}}}