Exploring Matrices with the TI-84

What key combination is used to access the matrix menu on a TI-84 calculator?

• Alpha + Matrix

• 2nd + Math

• Mode + Matrix

• 2nd + Matrix

How many times do you press the right arrow to move to the edit menu after accessing the matrix menu?

• Once

• Twice

• Three times

• Four times

How many rows and columns does the first matrix entered in the tutorial have?

• 2 rows and 2 columns

• 3 rows and 1 column

• 2 rows and 3 columns

• 3 rows and 3 columns

What is the correct sequence to enter the number of rows and columns for a matrix?

• Select rows, enter, select columns, enter

• Select columns, enter, select rows, enter

• Enter, select rows, right arrow, select columns, enter

• Enter, select columns, right arrow, select rows, enter

What operation is primarily discussed to solve the dinner cost problem?

• Matrix multiplication

• Matrix subtraction

• Matrix division

• Matrix addition

What dimensions does Matrix A have in the problem scenario?

• 1x3

• 3x3

• 2x3

• 3x1

What is the cost of an entree as entered in Matrix B?

• $8

• $15

• $17

• $11

Which family had exactly one dessert?

• Kelly's

• Drake's

• Smith's

• None

What is the total cost of the dinner for the Smiths?

• $95

• $70

• $83

• $106

After performing matrix multiplication, what type of matrix is displayed as the result in the tutorial?

• 3x1

• 1x3

• 3x3

• 2x2