Answer:

Step-by-step explanation:
there are 8 numbers
we want one of them (number 4)
which is 1 in 8
that is:

We want to solve this:
54x + 64 ≥ 49x + 59
First, subtract 49x from both sides and you would get:
5x + 64 ≥ 59
Then subtract 64 from both sides:
5x ≥ -5
Divide both sides by 5:
x ≥ -1
600 is 10 times larger than 60
Answer is b !!!!!!!!!!!!!!
So percent means part out of 100
30%=30/100=3/10
'of' means mutliply
30% of 130 is birds
3/10 times 130=birds
390/10=birds
39=birds
there are 39 exhibits with birds