Case 1 - BrainPower Tutoring
The owner of BrainPower Tutoring needs an application to calculate and print estimates to provide to potential clients for tutoring services. A tutoring session is a minimum of one hour, and the hourly rate varies based on the subject. The application should allow the owner to enter the client’s name, subject, number of tutoring sessions, and hourly rate. The application will display the total fee and allow the owner to print the estimate. You should also provide the ability for the owner to clear the screen and exit the application.
-Which of the following statements would calculate and display the total fee?
A)TotalFee.Text = Val(txtNumberSessions) * Val(txtRate)
B)TotalFee.Text = NumberSessions.Text * Rate.Text
C)lblTotalFee.Text = Val(txtNumberSessions.Text) * Val(txtRate.Text)
D)TotalFee = NumberSessions * Rate

Question

Quizplus · Accepted Answer

This statement correctly converts the input values of txtNumberSessions and txtRate into numbers using Val(), multiplies them together, and assigns the result to the lblTotalFee control. Option A also correctly calculates the total fee, but it assigns the result to a control called TotalFee.Text, which may not exist in the program. Option B multiplies the text values of NumberSessions and Rate without converting them to numbers first. Option D multiplies the variable names NumberSessions and Rate without indicating where the result should be displayed.