Answer:
(7.5, -1)
Step-by-step explanation:
hope this helps you!
Answer:
22.1 grams
Step-by-step explanation:
At the end of each minute, (1 -17.1%) = 82.9% of the element remains. At the end of 19 minutes, the quantity has been multiplied by that value 19 times, so the remaining amount is ...
(780 g)(0.829^19) ≈ 22.1 g
After 19 minutes 22.1 grams remain.

Any negative or positive number inside an absolute value will always come out positive.
The solution is where the lines intersect.
They intersect at the point (0,-1)
x = 0
y = -1