7times as much as the sum of 1/3 and 4/5

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =

Can someone pls ! pls answer all. no explanation needed..

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?