Find the nonpermissable replacement for the variable in this expression: 3x/5x+2

Step-by-step explanation:

Non permissible replacement for the variables are the values of x which makes the given function undefined .

The given expression is a rational function and the concept is that a zero in the denominator makes the rational expression undefined .

so to know the Non permissible replacement we need to equate the denominator to 0 .

we get

5x + 2 = 0

5x = -2

It means the Non permissible replacement is

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.