I need help with this

A) 67.5

Step-by-step explanation:

I. When the ratio is 1 inch/13.5 ft, find the total ft of 5 inch

         x = 13.5 * 5

        x = 67.5

Hope that help :)

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.