4-16. Look at the figure formed by square tiles below. Think about how you could figure out how any small squares there are without counting each one.
a. Write and simplify an expression involving addition to count the number of small squares.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

What is the difference between the equations of a vertical and a horizontal line?