Suppose that 30% of students prefer to write with a mechanical pencil. suppose we sample students, one at a time, and stop as soon as we have selected one who prefers to write with a mechanical pencil. the probability that we will select 2 or fewer students is

Can someone me out here and the tell me the greatest common factor

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.!

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.