Step 1 there is 2 penguins, step 2 there are 3 penguins, step 3 there are 7 penguins, how many penguins will there be on step 43?

Can some one me with this math problem?

Which function has the domain x> -11? y= x+ 11 +5 y= x-11 +5 y= x+5 - 11 y= x+5 + 11

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels