Brandon buys a basket of eggplants on sale for 7$ before tax. the sales tax is 4%

What is the vertex form of f(x) = x2 + 6x + 3

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?