Answer:
1.25kg
Step-by-step explanation:
useing the problem the half life equation will be:
f(x)=5(0.5)^(x/140)
x is amount of days
so plugging in 280 for x will get 1.25kg
Answer:
y= - frac4/7 x + frac9/7
Step-by-step explanation:
5x+8y = 24
The answer is c) y=3 -5/8 x