If a = 3b3/c, what happens to a when b is doubled?

If a = 3b3/c, what happens to a when both c and b are doubled?

Question

If a = 3b3/c, what happens to a when b is doubled?

If a = 3b3/c, what happens to a when both c and b are doubled?

kittiwitti1 · Answer

first one: double b and you get this$$a=\frac{3(2b)3}{c}$$
second one: double both c and b... you get this$$a=\frac{3(2b)3}{2c}$$

kittiwitti1 · Answer

@mikehowk57 Sorry, didn't see the other one, but here's your answer

mikehowk57 · Answer

So is it cut in half?

kittiwitti1 · Answer

Technically, no, because you just cancel out the 2's in the second one

mikehowk57 · Answer

Oh okay.. 
Can you help me on this one? im studying for my big test..
If m represents an even number, which expression would represent on odd number? (Hint: pick a number that would work for m and plug it in each answer.)

kittiwitti1 · Answer

$m\pm1$

kittiwitti1 · Answer

Lol, idk. But if you have odd numbers, the even numbers are right next to the odd one, yeah?

mikehowk57 · Answer

so would 5m+1 work?

kittiwitti1 · Answer

Uh... lemme see
given m=5 (example)
5(5)+1 is 25+1 = 26

if m=7
5(7)+1 is 35+1 = 36

kittiwitti1 · Answer

Yeah. I think that works

mikehowk57 · Answer

Good thanks!