What is the slope of each line

17 in long 1.3 ft wide and 8in high what is the volume

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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