Select the equation which represents solving for the variable y. −3x+3y=−21

y=x−7

y=x+7

y=3x−21

y=3x+21

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

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

The area of a circle is equal to 1 dm². find the radius of the circle.