Question

Fran buys a shrub that has 12 branches. The shrub will grow 4 new branches everymonth. Use an equation to determine the total number of branches whis shrub will have after 7 months.

Answer 1

Let b be the number of branches that the shrub will have after m months, since the shrub has an initial amount of 12 branches and the shrub grows 4 new branches every month, then we can set the following equation:

`b=4m+12.`

Evaluating the above equation at m=7 we get:

`b=4\cdot7+12.`

Simplifying the above result we get that the shrub will have

`40`

branches after 7 months.