Need answers please find the midpoint then simplified

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Aline passes through 3,7 and 6,9 what equation represents the line

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.