The cost of a ticket to an amusement park is $42 per person. for each group of up to eight people the cost per ticket decreases by three dollars for each person in the group. marco’s ticket cost $30. write and solve an equation to find the number of people in marco’s group

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.