You would need to isolate the "X" variable because it is common in all 3 equations.
17.01+5+2+3= 27.01 (total expense)
100-27.01= 72.99 (change)
5+2= 7 (total winnings)
72.99+7.00= 79.99 (total change).
Answer:
3820 years
Step-by-step explanation:
The age of the skull can be found using carbon-14 by applying the half-life relationship.
Age of skull is given by;

where N=63 N₀=100 -0.693=decay factor of carbon and 5730 =half-life of carbon-14, t =age
substitute values in equation

40$
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So..to make it easier you can jut multiply by 2 on both sides...
so you get 3y-2y=8+y..
which is equal to 0=8..but because they arent equal it means that there is no solution.