2/7 to 4/7 percent change i need help since this is due tomorrow

Grandma made an apple pie. josh and his brother joe finished 4/5 of it. then 3 friends came over and shared the left over. how much pie did each friend eat

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots