Question

Belinda wants to invest $1000. The table below shows the value of her investment under two different options for three different years:


Number of years 1 2 3
Option 1 (amount in dollars) 1100 1210 1331
Option 2 (amount in dollars) 1100 1200 1300


Part A: What type of function, linear or exponential, can be used to describe the value of the investment after a fixed number of years using option 1 and option 2? Explain your answer. (2 points)

Part B: Write one function for each option to describe the value of the investment f(n), in dollars, after n years. (4 points)

Answer 1

Can you explain the difference between Option 1 and option 2

Answer 2

option 2 is increasing by 100

Answer 3

option one increases by 110 then 111 so yeah

Answer 4

Which one is a linear?

Answer 5

option 2 i think

Answer 6

Correct. Do you know the formula for a linear function?

Answer 7

y=mx=b?

Answer 8

So how do you find m?

Answer 9

-b so now its y-b=mx
/x so now its y-b/x=m?

Answer 10

something like that

Answer 11

m = slope => rise over run

\[\frac{ \Delta y }{ \Delta x }\]

Is your time on the x axis or y axis?

Is dollars on the x axis or y axis?

Answer 12

dollars= y time=x

Answer 13

So what is the change in y over the change in x?

Answer 14

for which one opt one or opt 2

Answer 15

im so confused

Answer 16

We're working on option 2 which is linear. You gave the correct formula for a linear equation.