Brandon's class has 7 boys and 13 girls. explain how do the ratios 7: 13 and 7: 20 describe brandon's class?

Find the domain of the function  [tex]f(x) = \sqrt{3x - 7} [/tex]in interval form, the domain of f is what? in advance.

What is x and y intercepts for y=x+7

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.