Can anyone help me with this, please

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Find the slope of the line passing through a pair of points

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