Classify by degree of polynomial:
-2x²x
Linear
Constant
Cubic
Quadratic

What is sin 7x/4 ? i need on this urgent trig

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?