Answer:
1.1(for infinity) or 0.9
Step-by-step explanation:
it depends if you do 90/100 or 100/90
90/100 = 0.9
100/90 = 1.1(for infinity)
so sorry i couldn't figure out specifically what to divide but i hope both of these answers helped you!
Each card she sells cost $3.25.
y = 3.25s
y = 3.25(4) = 13
Each card she buys cost $5.50.
y = 5.25b
y = 5.25(7) = 38.5
She spent 38.5 dollars in total. However, you need to subtract the money she earned by the total cost.
38.5 - 13 = 25.5
She paid 25.5 dollars out of her own pocket, including the money she earned from selling cards she paid 38.5 dollars.
So the answer is "She spent $25.50"
Let me know if it's correct
-49/15 -3 4/15...........
Going by the formula, Half-Life = ln(.5) / k
Half-Life = .693147 / .1205
Half-Life = 5.75 days and rounded to nearest tenth,
Half-Life = 5.8 days