Help me fast! No links pls:D

Find the distance between points (1,5) and (9,2) to the nearest tenth.

A. 73
B. 8.5
C. 8.1
D. 4.1

What are the domain and range of f(x)=[1/5]x

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is