The scatterplot and trend line show a positive correlation between advertising costs and sales. Which two points can be used to find the slope of the trend line?

Point 1: ?
Point 2: ?

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.