Evaluate the expression: 81 / 9 + (5 with the exponet of 2- 6.7) - 12

Pls an ice cream shop sells 5 times as many cake cones as waffle cones use variable x to represent the number of waffle the ice cream shop sells and use this variable to write an expression for the number of cake cones the ice cream shop sells. enter the expression for the number of cake cones the ice cream shop sells

The sum of two numbers is 86, and their difference is 20. find the two numbers

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29