Solve the problem by writing an inequality. . a club decides to sell t-shirts for $15 as a fundraiser. it costs $20 plus $9 per t-shirt to make the t-shirts. write and solve an equation to find how many t-shirts the club needs to make and sell in order to profit at least $150.. 15x – (9x + 20) ≥ 150; x ≥ 28.33. 15x – 9x + 20 ≥ 150; x ≥ 20. (8x + 20) – 15x ≥ 150; x ≥ 20. 15x – 9(x + 20) ≥ 150; x ≥ 20

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Are the corresponding angles congruent? explain why or why not.