Jacob is taking a multiple-choice test with 4 questions. For each question there are 3 different answers: A, B, and C. Jacob forgot study for the test so he is just going to guess the answers. (a) Jacob will guess an answer for each of the 4 questions. In how many different ways could he fill out the answer sheet? 12 (b) Jacob's teacher gives the students in the class the option leaving any (or all) of questions unanswered if a student unsure of the answer. In how many different ways can Jacob fill out the answer sheet if he has the option of leaving as many questions as he likes unanswered? 15

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.