The video tutorial explains how to represent and simplify cell phone signal strength using mathematical expressions. It covers the use of negative exponents and how they affect the placement of terms in an expression. The tutorial also delves into converting between radical expressions and rational exponents, providing a step-by-step guide to simplifying these expressions.

What is the engineer trying to determine in the video?

• Battery life of a new phone

• Signal strength of a new phone

• Design of a new phone

• Cost of a new phone

How does a negative exponent affect an expression?

• It moves the value to the denominator

• It halves the value

• It doubles the value

• It squares the value

What is the equivalent of raising a number to the 1/2 power?

• Cubing the number

• Taking the fourth root

• Taking the square root

• Doubling the number

What does the index in a radical expression become when converted to a rational exponent?

• Coefficient of the base

• Denominator of the fraction

• Exponent of the base

• Numerator of the fraction

How can 625 to the power of 1/12 be rewritten?

• As 625 to the power of 1/2

• As the square root of 625

• As the fourth root of 625

• As 625 to the power of 1/4

What is the base in the expression 625 to the power of 1/12?

• 12

• 625

• 1

• 4

What is the result of taking the fourth root of 625?

• 125

• 25

• 625

• 5

What happens to the numerator in a rational exponent when converting back to a radical expression?

• It becomes the index

• It becomes the power of the base

• It is added to the base

• It is subtracted from the base

What is the simplified radical expression for 625 to the power of 1/4?

• The cube root of 625

• The fourth root of 625

• The square root of 625

• 625 to the power of 1/2

How can expressions with rational exponents be rewritten?

• As polynomial expressions

• As logarithmic expressions

• As trigonometric expressions

• As radical expressions