A scientist looks at a cell through a microscope. The actual diameter of the cell is 2.5 x 10*-5 meters. What is the diameter of the image of the cell if it id magnified 400 times? PLS HELP. NEED IT QUICKLY TY

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

this is answer of 144 cubic meters

answer: its the third option.

step-by-step explanation:

i just took the test.

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.