Answer: A. You need two functions, one for each balloon:
Let h be height, in ft.
Let t be time, in min.
Balloon 1:
h1 = 250 (starting height) + 110t (rate that height is increasing)
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
the graph of 'x < 1' must have an open circle on the number 1 with shading to the left (to indicate all values less than one)
I disagree. If each side of the equation is divided by 5, the result is x2 = 4. By the square root property of equality, x = -2 or x = 2. So x could be -2 instead of 2.
Answer: 
Explanation:
The equation of the unit circle is 
Plug in y = -2/7 and solve for x

Answer:
The answer is: All whole numbers are integers, No rational numbers are integers, and No real numbers are irrational numbers.
Step-by-step explanation: