Sarah has a set of tiles that follow the pattern of the figures shown below. She says that she has a set of tiles that has nine red triangles. Is nine a reasonable number of red triangles? What is a valid explanation for your answer?

Ineed with this. the figure is made up of a square and a rectangle. find the area of the shaded region.

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.!

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?