What is the slope of a vertical line?

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

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

Determine domain and range, largest open interval, and intervals which function is continuous.