Substitute this simultaneous linear equation

In the surface area formula for cylinders which expressionrepresents the lateral area

Which ahows the graph of the solution set of 6x+4y< 12

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27