I think its A because if you think about it 6 and 12 its a easy possiblility so it is A i think
First you find how many prizes were dolls. Then you subtract that number from 64.
One car travels at a speed of 75 kilometers per hour and the other car travels at a speed of 105 kilometers per hour.
Since both the cars are travelling towards each other their combined speed will be: 75+105=180 km/h.
Now, since the distance between the cars to start with is 540 km. Therefore, the time taken before the cars collide is:
hours.
Now, the speed of the canary is 100 km/h.
Therefore, the Canary flies flies for (100 km/h)x(3 hours) = 300 km before the cars collide.
F'(x) = 7sec x . tan x - 5.