Evaluate the expression 3x^2+ y if x = 1 and
y = -3.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Find the value of x that will make l ll m

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?