-3(2d + 5) please help me solve this using distributive property

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Solve the triangle. a = 21°, c = 105°, c = 5

Common binomial factor of 6x(3x+7)+5(3x+7)