Min and max of f(x, y)= 2x^3 + y^4 on x^2 + Y^2 <=1

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.