Answer:
4
Step-by-step explanation:
To find the rate of change for the increase (warm up), use the coordinate pair of any two points on the line that slopes upwards in the graph.
Let's use the following:
At 5 mins (x), heart beats (y) is 80 => (5, 80)
At 10 mins (x), heart beats (y) is 100 => (10, 100)
Rate of change = 
Rate of change is 4.
Answer:
12^2 + 4x
Step-by-step explanation:
We need to solve the area of these two rectangles separately.
Equation: 4x(3x+1) --> 12x + 4
Area: 12x^2 + 4x
Hope this helps.
(12-2) divided by 2 ... i think i have done problems like this and the answer was always written the same way so i believe this is the answer
When the equation is of the form
... ax² +bx +c = 0
the discriminant is
... d = b² -4ac
Here, your equation is in the appropriate form, so we can identify
... a = -1, b = 4, c = -2
and calculate the discriminant as
... d = 4² - 4(-1)(-2) = 16 - 8 = 8
The discriminant is 8.
