A15-pound bag of wildflower seed covers 40 square feet .how many pounds of seed does it take to cover 1 square foot

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?