This is easy 4x+12 the answer
You're correct with the answer you have selected. It's 7.2 x 10^7
The answer is 152 because 102+8= 110 and 6 Times 7 is 42 and 42+110 = 152 so the answer choices are wrong
<span>A small cell has a large Surface are/volume ratio and therefore can exchange molecules with it's external environment rapidly.
Here, we can see the ratio is 6:1, which is very large ratio, so it will transport very rapidly. Thus, it denotes that cell can easily get the material it needs that move across it's surface
Hope this helps!</span>
N+2 and n+4.n+4 given that their sum is 81
