Need asap i lost braincelss and i keep getting this inccoreect

How many grams the dog will eat in 3 days?

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

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.