Which expressions are polynomials?
select each correct answer.

1. Polynomials are:

A ) 7 x^7 - x - 5

C ) 4 x + √ x - 1

D ) x/5 + 2

2. Polynomials are:

A ) x² - x √2

C ) 2 + s

D ) 4 x³ + y

3. The polynomial: - 5 x³ - 4 x + 1 is:

C ) Cubic trinomial.

4.  The degree of the polynomial: - 2 x² y^4 - 1/2 z is:

C ) 4

Step-by-step explanation:

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

correct answer is b. 27/8

step-by-step explanation: