From a phone survey a researcher determined that the true estimate for the proportion of voters who will elect the mayor is likely to be in the interval (0.39, 0.47) what is the surveys margin of error?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Suppose m: angle a =77 degrees what is the measure of a complement of a complement of angle a, what is a conclusion you can draw about a complement of a complement of an angle