Could someone help me with this question? Blob Eats Town

'use strict';

// LAB 2: SORTING AND CAMPY SCI-FI

// Welcome to Lab 2 =)

// Be sure to read all the comments!

// All of the instructions are inline with the assignment below.
// Look for the word TODO in comments.  Each TODO will have a
// description of what is required.

// To run this file (in the terminal) use: node lab2.js

//*********************************************************
// SETUP
//*********************************************************

// We're going to use this special assert method again to
// test our code
function assert(expression, failureMessage) {
  if (!expression) {
    console.log('assertion failure: ', failureMessage);
  }
}

//*********************************************************
// PROBLEM 1: The Blob. 20 points
//*********************************************************

/* Dowington, PA had 1000 citizens on the night the blob escaped
 its meteorite. At first, the blob could only find and consume
 Pennsylvanians at a rate of 1/hour. However, each time it digested
 someone, it became faster and stronger: adding to its consumption
 rate by 1 person/hour.

    for the...      | starting rate of | persons consumed |
                    |  consumption     |    that hour     |
--------------------|------------------|------------------|
    first hour      |    1/hour        |        1         |
    second hour     |    2/hour        |        2         |
    third hour      |    3/hour        |        3         |
    fourth hour     |    4/hour        |        4         |

 TODO: First, make a constructor function, called Blob, that makes blobs.
*/


// TODO: Next, create an instance of Blob named blob.


//TODO: Then, use a loop to calculate how long it took the blob to finish
// with Dowington.

while ()


var hoursSpentInDowington; // TODO: assign me the value of the
                           // above calculation (how long it took
                           // the blob to eat Dowington)


// Now, write a method that takes a population for an arbitrary
// town, and the starting consumption rate, and returns the number
// of hours the blob needs to ooze its way through that town.

function hoursToOoze(population, peoplePerHour) {
  // TODO: implement me based on the instructions above.
  // Be sure to then assign me to the Blob's prototype.
}

assert(blob.hoursToOoze(0, 1) === 0, 'no people means no time needed.');
assert(blob.hoursToOoze(1000, 1) === hoursSpentInDowington,
  'hoursSpentInDowington should match hoursToOoze\'s result for 1000');

// TODO: write three more assertions like the two above, testing out
// the hoursToOoze method.