Suppose a plant has height 1.75 feet and it grows by 0.5 feet each month. (i) Find the height after 7 months. (ii) Make a table of values for t varying from 0 to 10 months and show how the height, h, increases every month. (iii) Find an expression that relates h and t, and explain why it represents linear growth

 

PRACTICE QUESTIONS 

1.Suppose a plant has height 3.5 feet and it grows by 1.5 feet each month.
(i) Find the height after 8 months.
(ii) Make a table of values for t varying from 0 to 10 months and show how the height, h, increases every month.
(iii) Find an expression that relates h and t, and explain why it represents linear growth.

2. A mobile phone is bought for ₹25,000. Its value
decreases by ₹1200 every year.
(i) Find the value of the phone after 5 years.
(ii) Make a table of values for t varying from 0 to 8 years and show how the value of the phone, v, depreciates with time.
(iii) Find an expression that relates v and t, and explain why it represents linear decay.

3.A telecom company charges ₹1500 for a certain

recharge scheme. This prepaid balance is reduced by ₹75 each day after recharge.