union=( -2,-1,0,1,2,5,7,8) intersection= -1,1
X+10>2. The simplified answer is x>-8
So the answers are :
A: 5 seconds
and
B: 10 seconds
The LCD of 2/5 + k/4 = 9/10 is 20. Applying this LCD, we get:
8 + 5k = 18. Subtracting 8 from both sides: 5k = 10. Then k = 10/5, or k = 2.