Answer:
optionb
Step-by-step explanation:
46: 24a+40
First we are going to take a look at a) 8(3a+5)
a) We then simplify it by multiplying the numbers inside the parenthesis by 8.
a) 24a+40
Now we ask ourselves, is this equivalent to 24a+40? YES!
So your answer for #46 is a) 8(3a+5)
21^2/0.219 = 2013.69863
2 significant figures are the 20, so the answer is 2000