8 x 10^3 is how many times as large as 4 x 10^2?

How can i differentiate this equation?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line