Solve this expression and answer incorrect scientific notation (8.2E3)(4E5)

What is the range of this function? all real numbers such that y ≤ 40 all real numbers such that y ≥ 0 all real numbers such that 0 ≤ y ≤ 40 all real numbers such that 37.75 ≤ y ≤ 40

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

This question awards 100 ! i really don’t want to fail i will also mark you !