a truck can be rented from company a for $90 a day plus $0.20 per mile. Company b changes $60 a day plus $0.50 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same

22.

The answer is -pie over 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.