Rewrite each expression as a single logarithm. Then evaluate the expression without a calculator.
1.) log 5 + log 20
2.) log 3 – log 30
3.) 2 log 400 – log 16
PLS HELP OUT I WILL PAY 60 MORE POINTS IF YOU DO

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?

the ratios are reciprocals im positive

step-by-step explanation:

they are all positive numbers so it wouldn't be the other ones