When a wholesaler sold Tillitoys® at $25.00 per toy, sales were 800 units per week. After a price increase of $5.00 per unit, the average number of units sold dropped to 775 per week. The cost to produce one Tillitoy® is $3.00. Assuming that the demand function is linear, find the price and the number of toys sold that will maximize the total profit.

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?