Adrienne answered all 21 multiple choice questions correctly. if her teacher decided to let one of the questions count as bonus, worth the same number as the other problems on the test, what was adrienne's score? write your answer as a decimal and percent.

plz tell me how to do it too : )

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?