Answer:
$400
OR 
Step-by-step explanation:
$400 stays the same, 72 cents is 72/100. Simplify and voila
Answer:
6
Step-by-step explanation:
y = x² - 6x + 11
Complete the square.
y = x² - 6x + 9 + 2
y = (x - 3)² + 2
a = 1, h = 3, k = 2
a + h + k = 6
3,500 m so 3 km and 500 m
Answer:
A
Step-by-step explanation:
Everything else is false and A is correct because the sum of two opposites equal 0.