Question

Sally wants to add to her collection of seashells. She currently has 100 seashells.
Starting today, she will collect 25 seashells each week.
What will be the total number of seashells in Sally’s collection after 5 weeks?
Show or explain how you got your answer.
Write an expression to represent the total number of seashells in Sally’s
collection after w weeks.

Answer 1

Ok so sally has 100 seashells to start with. Now every week she is going to collect 25 seashells each week and we want to work out how many seashells she has over 5 weeks
So...
1 week-25 seashells
5 weeks-125 seashells
So that’s 5x25 which=125
But she already has 100 seashells to start with so you need to add them on so
125+100=225 seashells after 5 weeks

Answer:225 seashells after 5 weeks

Answer 2

Answer:

The total number of seashells in Sally’s collection after 5 weeks is 225 and an expression to represent the total number of seashells in Sally’s  collection after w weeks is  $y = 100+25w$

Step-by-step explanation:

Sally has seashells currently = 100

From today , she will collect 25 seashells each week.

Let w be the no. of weeks

So, she will collect seashells in w weeks = 25w

So, total seashells after w weeks = 100+25w

Let y denotes total seashells after w weeks

So, $y = 100+25w$

Substitute w = 5

$y = 100+25(5)$

$y = 225$

Hence the total number of seashells in Sally’s collection after 5 weeks is 225 and an expression to represent the total number of seashells in Sally’s  collection after w weeks is  $y = 100+25w$