Traci collects money for a dance marathon. one group of sponsors donate $6 per hour she dances. another group donates $75 no matter how long she dances. what number of hours does she have to dance to the nearest minute in order to collect at least $1000

Traci collects money for a dance marathon.
=> One group of sponsors donate $6 per hour she dances.
=>  Another group donates $75 no matter how long she dances.
Find out what number of hours does she have to dance to the nearest minute in order to collect at least $1000
Formula:
=> 75 dollars + 6x = 1000 dollars
=> 6x = 1000 – 75
=> 6x = 925
=> 6x / 6 = 925 / 6
=> x = 154.17
Let’s check
=> 154.17 * 6 = 925 + 75 = 100

The answer is part a: use

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.