the sequence is in multiples of 4 (2*4=8, 8*4=32, 32*4=128)
so 128*4=512, 512*4=2048, 2048*4=8192 & 8192*4=32768
2+8+32+128+512+2048+8192+32768=43690
His mistake was adding 12+2 when he was supposed to subtract.
Answer:
D
Step-by-step explanation:
x = -4 or x = 2
