Svetlana's hair is 4 centimeters long. Her hair grows 1.5 centimeters per month. Svetlana wants her hair to grow so that it is at least 7 centimeters long. How many months, m, will it take Svetlana's hair to grow so it is at least 7 centimeters long?
Write an inequality.
Write an inequality.
2 Answers
2 months.
Explanation:
first subtract Svetlana present hair length from the desired hair length in order to find out how much growth is required.
Next divide the 3 cm needed to reach the desired length by the rate of growth to find the number of months.
Answer:
Explanation:
We are given the current length of hair as
gm+b>=r
whereg is the slope or growth rate in centimeters,m as our variable for number of months,b is the starting length in centimeters, andr is the required length in centimeters.
Plugging in our values, we have:
To find the number of months,
Therefore, it will take at least 2 months for her hair to be at least 7 centimeters