What’s the missing number in the table?

5

Step-by-step explanation:

5

Step-by-step explanation:

For this problem, we simply plug the values of x into the equation to find the values for y.

When x = 1

y = 2x + 1 = 2(1) + 1 = 3

When x = 2

y = 2x + 1 = 2(2) + 1 = 5

When x = -1

y = 2x + 1 = 2(-1) + 1 = -1

So, the missing number in the table is 5.

Cheers.

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!