Suppose you are determining the growth rate of two species of plants. species a is 12 cm tall and grows 2 cm per month. species b is 10 cm tall and grows 3 cm per month. which system of equations models the height of each species a(m) and b(m) as a function of months m. a(m) = 12 + 2m b(m) = 10 + 3m a(m) = 2 + 12m b(m) = 10 + 3m a(m) = 12 + 2m b(m) = 3 + 10m a(m) = 2 + 12m b(m) = 3 + 10m

First option:

A(m) = 12 + 2m

B(m) = 10 + 3m

Solution:

When you model a function y that depends on a veriable x, and you know the inicial value b, and the growth rate r, you can use this formula:

y=b+r x

We have two functions to model:

1) Species A is 12 cm tall and grows 2 cm per month:

y=A(m); b=12 cm; r=2 cm/month; x=m. Then:

Replacing in the equation:

y=b+r x

A(m)=12+2 m

2) Species B is 10 cm tall and grows 3 cm per month:

y=B(m); b=10 cm; r=3 cm/month; x=m. Then:

Replacing in the equation:

y=b+r x

B(m)=10+3 m

step-by-step explanation:

answer: 8

step-by-step explanation: