Hey yall I'm 13 so just straight-up give me the answer here is the question... so it asks me " Rewrite each expression as a single fraction." what does that mean?

Write 17/20 as a decimal and as a percent.

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

What term makes it inconsistent y=2x - 4