Answer:
x=6
Step-by-step explanation:
5x+9-3x=21
5x-3x=21-9
2x=12
x=6
12*3= 36
12 and 3 could be factors of 36.
I hope this helped you! <3
1. $1.23 per pair
A dozen is 12 so you do 12x7=84
Then you do 103.32 divided by 84 which gives you 1.23
2. His error was doing 103.32 divided by 7 because he thought it was only 7 pairs but it’s 7 dozen.
Sixteen because if there are eight less tigers than lions at a zoo, then that means you add 8 to get the number of lions
it's A because you put your Decimals in order and round the nearest tenths.