Tom earns $90,804 a year and spends 40% of his salary on rent.

a. How much does Tom spend on rent per year?

b. If his monthly rent is increased by $151.34, what percentage of Tom's salary will be spent on rent?

c. If he wants to buy a house for $1 million and the home deposit required is 20 per cent, how much deposit is required?

d. If Tom saves 30% of his salary to put towards the home deposit, what is the minimum number of years he needs to save to achieve the deposit found in (c)?

2. Problem 2:

Growth charts are often used to monitor children's health. Suppose the average weight for a 1 year old and a 30 month old are 9.6 kilograms and 13.5 kilograms, respectively.

a. Find the equation that relates a child's weight (in kilograms) to age (in months), assuming that weight is a linear function of age from 1 year old.

b. Provide a detailed interpretation of the slope.

c. What is the estimated weight of a 3 year old child?