Answer:
a,c,d
Step-by-step explanation:
By solving and then graphing
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:
4 years
Step-by-step explanation:
I=prt
1440=4000(r)0.09
4000r * 0.09 = 1440
divide both sides by 4000 times 0.09
r = 4
