2(8q-5) = 4q
what is the answer?

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

How to do this , and can some one explain

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)