4. Dr. Stevenson currently has 20 patients that he sees regularly. This number of patients increases each year by 4.

1. Write a linear equation that represents this scenario. Let y represent the number of patients and x represent the number of years

2. Create a table of values using the equation. This table must have at least 5 ordered pairs.

ur right ive taken the test

step-by-step explanation:

answer: your answer is c

step-by-step explanation:

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81