A pencil factory has increased the amount of pencils produced from 1200 to 1500 pencils. What
is the percentage increase?
HURRY

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet