A person wearing contact lenses is told to wear them for 3 hours on the first day and for 1/2 hour longer on each succeeding day. For how many hours will the person wear the contact lenses on the 10th day?

On the 10th day, the person will wear 8 hours

Step-by-step explanation:

Step 1: Given the person wears contact lenses for 3 hours on the 1st day and 0.5 hours every succeeding day. Form an equation for this.

Number of hours that the person wears contact lenses = 3 + 0.5 × n, where n is the respective succeeding day

⇒ Number of hours on the 10th day = 3 + 0.5 × 10 = 3 + 5 = 8

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.