TI-84 Calculator Functions and Operations

This video tutorial introduces the TI-84 graphing calculator, covering how to turn it on and off, adjust mode settings, and perform calculations with fractions, exponents, and radicals. It also explains using scientific notation and storing variables for calculations. The video aims to help users effectively operate the calculator for various mathematical tasks.

What is the correct sequence to turn off the TI-84 calculator?

• Press MODE and then ON

• Press CLEAR and then ON

• Press 2nd and then ON

• Press ON button twice

What does setting the calculator to FLOAT mode do?

• Displays numbers with a fixed number of decimal places

• Displays numbers in scientific notation

• Displays all numbers with two decimal places

• Displays numbers with decimal places only when necessary

Which key combination is used to clear the home screen on the TI-84?

• Press MODE, then CLEAR

• Press 2nd, then CLEAR

• Press ALPHA, then CLEAR

• Press CLEAR

How do you enter the fraction 1/2 on the TI-84 calculator?

• Press 1, then the fraction key, then 2

• Press 1, then divide by, then 2

• Press 1, then multiply by, then 2

• Press 1, then subtract, then 2

How do you convert a decimal to a fraction on the TI-84?

• Press 2nd, then fraction

• Press MODE, then select fraction

• Press MATH, then select option 1

• Press ALPHA, then fraction

Which key is used for entering exponents on the TI-84 calculator?

• The square root key

• The division key

• The caret (^) key

• The multiplication key

How do you find the cube root of a number on the TI-84 calculator?

• Press MODE, then select cube root

• Press ALPHA, then the cube root key

• Press MATH, then select option 4

• Press 2nd, then the square root key

What is the procedure to enter a number in scientific notation on the TI-84?

• Press ALPHA, then the E key, then enter the exponent

• Press MODE, then select scientific notation

• Press 2nd, then the E key, then enter the exponent

• Press the E key, then enter the exponent

How can you store the value 5 in variable A on the TI-84?

• Press 5, then ALPHA, then A

• Press 5, then CLEAR, then A

• Press 5, then STORE, then ALPHA, then A

• Press 5, then MODE, then A

What is the result of evaluating the expression B^2 - 4AC if A=5, B=-3, and C=-2?

• 25

• 49

• 16

• 0