On Monday ria delivered a parcel to a hospital the travel graph represents rias journey to the hospital

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.

40-24 to 4: 740+24=class4=boys 7=gals =4: 7