Find the 31st term of the following sequence.

9, 15, 21,

What is the slope of the line shown below?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.