Answer:
16y-18 = 2(8y-9)
24y+30 = 6(4y+5)
20y+8 = 4(5y+2)
97-15 = 3(3y-5)
Step-by-step explanation:
the bold numbers are the GCF
The strategy for winning every time appears to be to ensure that the remaining number of coins is a multiple of 6. Then the first player can ensure a win by taking 2 coins to make the total number be 48.
D(t) = -4t^3 + 40t^2 + 500t = 4088
4t^3 - 40t^2 - 500t + 4088 = 0
t = 7
Therefore, the plane has flown 4088 km 7 hours after it took off.
