What should be done so that the expression will have a value of 10?
12 - 2 + 22 ÷ 8
add parentheses around 12 - 2.
add parentheses around 2 + 2.
add parentheses around 22 ÷ 8.
nothing needs to be done.

Of 400 people at the school carnival, 95% are students and the rest are teachers. a. how many students are at the school carnival? b. if 55% of the students at the school carnival are boys, how many are girls? c. how many teachers are at the school carnival? d. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?