The number of roses (r) in a garden increases when the number of weeds (w) decreases. Write the correct equation for this scenario, and solve for the number of roses when there are 5 weeds.

Weeds Roses

10 20

20 10

Number of roses (r) in a garden increases when the number of weeds (w) decreases, this supports an inverse relationship between the two variables.

The formula is then therefore, r = k/w

Solve for constant first.

r = k/w

20 = k/10

200 = k

r=200/5

r=40 roses

40 roses when there are 5 weeds.