Answer:
-1280
Step-by-step explanation:
10, -20, 40, -80, 160, -320, 640, -1280
The pattern of the sign is positive, negative, positive, so the 8th term is negative. Then the rule is times 2.
.......:.......:...............
Multiply 5 3 and 7.
I.e, 5×3=15
15×7=105
Now I am not sure here but either you can do 10.5 or 105. Any two of them can be the volume. You can search in Google. But I hope it helped.
4+3x
-2x and 5x could be combined since they're like terms
Instead of 4-2x+5x, the expression would be 4+3x.
6 out of 25
MQ would be CQ-CM
21-17 = 4
MQ = 4