Twice the sum of a number and seven is eight find the number

What is the solution to the equation in the & show work i’m very

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12