Afair charged $2.50 admission for adults and a dollar for children. the receipts for 1 day were $1951 on 1300 paid admissions. how many adults attended the fair that day?

X = adults
y = children

x + y = 1300
2.5x + y = 1951 Subtract these two equations.
-1.5x = - 651 
x = -651/-1.5
x = 434 Adults

y = 1300 - x
y = 1300 - 434
y = 866 children

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.

The correct answer is c.