What is the area of the polygon 3.6cm , 3cm , 2.1 cm , 1.5 cm , 5.7 cm

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Which of the following is true for the relation f(x)=2x^2+1

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23