Daitron sold a total of 28 t-shirts and sweatshirts as a part of a fundraiser for the DMS Basketball team. If t-shirts cost $12 each and sweatshirts cost $20 each and he raised a total of $424, how many t-shirts did he sell?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?