Answer:
y = - x² - 4x - 9
Step-by-step explanation:
Given
y = - (x + 2)² - 5 ← expand (x + 2)² using FOIL
= - (x² + 4x + 4) - 5 ← distribute parenthesis by - 1
= - x² - 4x - 4 - 5 ← collect like terms
= - x² - 4x - 9 ← in standard form
Answer:
-1
Step-by-step explanation:
f(4) = 2.5(4) -11
f(4) = 10 -11
f(4) = -1
Answer:
Answer is 5:7.5:12.5
Step-by-step explanation:
2+3+5=10
25÷10=2.5
2.5×2=5
2.5×3=7.5
2.5×5=12.5
5:7.5:12.5
I hope it's helpful!