Answer:
x=6561
Step-by-step explanation:
We can solve this equation for x to get

<h3> Answer:</h3><h2>a.215</h2>
I don't know in letter b.
#CaRRyOnLeArniNG
1 hour is 15m
2 hour is 30m
3 hour is 65m
4 hour is 80m
There are two sides in a coin so the chance of getting tails is 1/2, which would be 0.5.
I'm not sure tho.