Areflection through what line will move p(6,-13) to p(6,13)

Is the orthocenter of a triangle on the inside ?

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?

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?