Which number line model represents the expression 5\dfrac12+(-3)5 2 1 +(−3)5, start fraction, 1, divided by, 2, end fraction, plus, left parenthesis, minus, 3, right parenthesis?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

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

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)