Anotebook costs $4.50 plus sales tax ,the notebook is $4.86.what is the sales tax

What are “like terms”? why can we only add like terms?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5