120=(n-2)*180/n find n

Nine more than four times a number is the same as one less than twice the number. find the number?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.