The Drama Club is selling tickets for their Spring Concert. Their goal is to raise $1428. On the first day, they sell 12 tickets. On the following days, the number of tickets sold increases by 4 tickets per day. a) How many tickets in total are sold by the end of the 7th day?

b) Each ticket cost $3.50. On which day of ticket sales will the students reach their goal?

Plz help . I dont get this

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.