St. augustine grass can grow at the rate of 4 over 7 centimeter per week. how many weeks will it take the grass to grow 12 over 7 centimeters? explain your answer using words, and show your work using division of fractions.

Given, the rate of growth of St. Augustine grass is cm per week.

We have to find the number of weeks that the grass grow to cm.

Let's take the number of weeks be x.

In 1 week the grass grow = cm

So in x weeks the grass grow = cm

So we can write,

To solve it for x, first we will move 7 to the right side by multiplying it to both sides. We will get,

Now to get we will move 4 to the right side by dividing it to both sides. We will get,

So we have got the required answer.

After 3 weeks the grass grow .

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^