Plot the solution set of:/-x= 3.5 -5
-4
-3
-2
-1
0
1
2
3
4
5

there would be 162.15 calories in this cereal.

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

the cost of the pair of pants is $31.95