Answer:
x+y<or equal to 50
x>y
when x=30 then y=18
Step-by-step explanation:
a.the x>y cause 30>18
and x+y=30+18=48<50
f(8) = (8)^2 - 4 = 64 - 4 = 60
12.98x36.7=476.366
Number one because...
2(x-1)>=-12
2x-2>=-12
2x>=-10
X>=-5