Sean counts by 2s from 15 to 35 which number does sean count

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.