Please help please help This is a quadratic function and I have to use a square roots method please help me

F(x)=3x^2+7x-20

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?