How many times larger is 8*10^4 than 8*10^1

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

What is the measure of the smallest angle in the diagram? 15 29 32 45

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?