What's the sum of 2⁄5 and 2⁄4?

a. 10⁄20
b. 8⁄20
c. 6⁄7
d. 9⁄10

If m 17 27 90 63 ** picture is attached

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?

Graph the line with the given slope m and y-intercept b. m=-3,b=1