The science club is experiencing a growth in membership

Question

On average, they are seeing 2 new members sign up each week. If they started with 10 members which function, S(x), represents the number of members in the science club after x weeks?

Answer 1

10 + 2(number of weeks since the week when there was only 10)

l;et x = the number of week since ....

10 + 2X

so at the start 10 + 2(0) = 10

and every week adds 2 more after that

Answer 2

Hi Polar,

On average, they are seeing 2 new members sign up each week. If they started with 10 members which function, S(x), represents the number of members in the science club after x weeks?

Now 10

1 week 12

2 weeks 14

3 weeks 16

4 weeks 18

5 weeks 20

It appears that the club is adding 2 members every week. Repeatedly adding is the same as multiplying.

S(x) = 10 + 2x

This function rule(equation) starts with 10 members and adds 2 for every week.

Enjoy