Each square inch of your body has about 6.5 × 10^2 pores. Suppose the top of your foot has an area of about 2.0 × 10^1 in. ^2. About how many pores are on the top of your foot?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Precalculus question, image attached.