Write an expression for the calculation 84 divide into sevenths added to 9 divided into thirds

Evaluate the following expression 1/3^2

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

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120