What biconditional would be a triangle three side polygon

Which expression is equivalent to √ -80?

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250