What is 18-10x < -22. this is an inequality problem.

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

The circumference of a circle is 5 pi cm. what is the area of the circle?

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