Answer:
4/15
Step-by-step explanation:
2/3 play sports
2/5 play football
Of the 2/3 that play sports, 2/5 of them play football
2/3(2/5) = 4/15
9)

10) The y-intercept is always the constant term (without

). Therefore, the y-int is -9. The slope is always the term in front of the

, and so it is 3.
680 I think because if you add what happened to him and then minus it you get 170 but the injuries added together is 680 Im not sure if that's all that you need but I hope this helps XD
X + 5x - 13 = 140
6x - 13 = 140
6x = 153
x = 25.5
5(25.5) -13 = 114.5
CHECK: 25.5 + 114.5 = 140
Expressions are problems with no answer. I would use it to represent inequalities and/or a basic formula