Question

A plant 8 inches tall is placed by a window. If it grows 3 inches a day, how many days will it take 26 inches tall?

Answer 1

Concept = rates

3 inches per day is the rate here, and we start out at 8 so...

Answer 2

26=8+3x
18=3x
x=6 days

Answer 3

thanks :)

Answer 4

\[26 \text{inches} = ( 3 \ \frac{\text{inches}}{\cancel{\text{day}}})(x \ \cancel{\text{days}}) + (8 \ \text{inches})\]

Don't forget the units! :-)