Please help me, it's urgent.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')