Can u help me find the Answer

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?