Can someone help me Plls

Polynomial that can be factored as (3x-4)(3x+4)

Aline passes through 3,7 and 6,9 what equation represents the 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