PLEASE PLEASE HELP ME WITH MY MATH im failing her class and i need to get this right will give brainlest if correct

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.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]