Store a sells 11 bagels for $9.57. store b sells 4 bagels for $3.52. how do the unit rates compare?

a) the bagels at store a are $0.01 more expensive than the bagels at store b.
b) the bagels at store a are $0.01 less expensive than the bagels at store b.
c) the bagels at store a are $0.03 more expensive than the bagels at store b.
d) the bagels at store a are $0.03 less expensive than the bagels at store b.

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.