Answer:
-4 < n ≤ 5
Step-by-step explanation:
________________

The probability of drawing a red marble on the first attempt is

After the first marble is drawn, and we know it to be red, we're drawing the next marble from a pool with one less marble than before (i.e. conditioning on the event

). So

And so
Answer:
834 and 799
Step-by-step explanation:
x+y=1633
x-y=35
2x= 1668
x=834
y=799
Hope this helps!
N/8, 4p, b+14, 90x, -16, 24-k, 3(w), 1+q, 13/z, 45+c, w-8
She saves £400
She spends £640