Please help this is a grade :( and if you dont know pls dont reply. Ill mark brainlest and give thanks

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?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.