Oil consumption is increasing at a rate of 1.1% per year. What is the doubling time for the consumption of oil at this rate?

Give your answer to the nearest integer.

During a period of hyperinflation, the price of food increased at a rate of 30% per month. The pattern of change is best described as:

A researcher would like to find a suitable model for the following data showing the relationship between the nitrogen oxide and carbon dioxide emissions from 46 different cars. The researcher should

During a period of hyperinflation, the price of food increased at a rate of 30% per month. If your food bill was $200 one month during this period, what was it 2 months later? Enter the amount of the food bill without the dollar sign: 

The population of Berwick is changing at a rate of +2% per year. The pattern of change is best described as

What might be the possible difficulties in the modelling of the world’s population growth with an exponential function of the form

y = Ae^kx 

Where A is the initial population when the modelling began, k (positive) is the continuous growth rate and x is the time (years).

Select all the correct answers.

Solve for X in the following equation:

2 log₁₀(X) = 8

Only give your answer to the nearest integer, please.

The population of the City of Riverina is changing at a rate of +2% per year. If the population is 100,000 today what will it be in three (3) years?

 Consider the following plot of residuals versus x for a regression analysis.

Based on this residual plot, what problem with the regression model or data is most noticeable?

Suppose we fit the least-squares regression line to a set of data. Points with unusually large values of the residuals are called