What is -4x+5y if x is 3 and y is 5

The answer is 13 hope this helps

FIrst we do multiplication, so 4x is 4*3, which is 12, but as it has a negative sign in front of it, the answer is negative. Then we do 5y which is 5*5, which is 25. Now we are left with -12 + 25, which is 13.

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.