The measure of the supplement of an angle is 30° more than four times the measure of the original angle. Find the measures of the angle.

Which expression is the factorization of x^2+10+21

Which of the following is an irrational number

The cost varies directly with the number of tickets purchased. it costs $145 for 10 people to attend a concert. a. what is the constant of proportionality (k)? b. write the direct variation equation. c. home much does it cost for 8 people? d. graph this situation. be sure to label each axis and give the graph a title.