Solve
w=3y + 3z, for y
w= 3y+3z, for z

            w = 3y + 3z   Subtract 3z from both sides
     w - 3z = 3y           Divide both sides by 3
w - 3z / 3 = y             Switch the sides to make it easier to read
             y = w - 3z / 3

            w = 3y + 3z   Subtract 3y from both sides
     w - 3y = 3z           Divide both sides by 3
w - 3y / 3 = z             Switch the sides to make it easier to read
             z = w - 3y / 3

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.