If f(x)= 2x-5, which expression represents f(x+1)?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which graph represents the parent function of y=(x+2)(x-2)

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?