What is the area of a trapezoid that has a base of 21 cm, a base of 15 cm, and a height of 9 cm? Question 1 options:

2,835 sq cm

162 sq cm

324 sq cm

30 pts, will mark brainliestwhat is the period of the sinusoidal function? (picture 1)what is the minimum of the sinusoidal function? (picture2)what is the maximum of the sinusoidal function? (picture 3)

I'm confused on this could anyone me and show me what i need to do to solve it.

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities