Tim has m dollars . rebecca has $6 dollars less than 1 over 10 times the number of dollars that tim has which expression represents the total amount of money if tim has $70 how much do rebecca ans tim have altogether?

Letter b sorry i’m i’m wrong xx

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.