Given the two expressions shown below:

a. square root of 64 plus square root of 5
b. square root of 64 plus square root of 4

which statement best describes the two expressions?
both are rational.
both are irrational.
a is rational, but b is irrational.
a is irrational, but b is rational.

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

What is the equation of a line passing through (-6,5) and having a slope of 1/3

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?