Answer:
c = 121
Step-by-step explanation:
Given
t² - 22t
To complete the square
add ( half the coefficient of the t- term )² to t² - 22t
= t² + 2(- 11)t + (- 11)²
= t² - 22t + 121
with c = 121
Thus
t² - 22t + 121 = (t - 11)²
Answer:
approximately 43 - 44 minutes exact
Use substitution
3x = -x - 4
Add x to both sides
4x = -4, x = -1
Y = 3(-1), y = -3
Solution: x = -1, y = -3
