Answer:
5 pints of blue and 2 pints of yellow make 7 pints of green. (5 + 2 = 7)
You must do this four times to get 28 pints of green. (4 · 7 = 28)
So you need 20 (4 · 5) pints of blue and 8 (4 · 2) pints of yellow.
Step-by-step explanation:
We want to combine b(t) and t(h) to create a function that described the number of bacteria, b, as a function of time, h.
This function can be called b(t(h)), or b(h).
Consider the function b(t), or bacteria as a function of temperature.
b(t) = 20t² - 70t +300
This describes the number of bacteria, given the temperature.
t(h) described the temperature as a function of time, specifically hours after refrigeration:
t(h) = 2h + 3
Since the time h can tell us the temperature t, and the temperature t can tell us the # of bacteria b, we can create a function that tells us the number of bacteria, b, given hours following refrigeration, h.
To do this, we plug t(h) in for every t in the b(t) function:
b(t(h)) = 20 (2h+3)² - 70(2h+3) + 300
We can also call this function b(h), since we now can express b as a function of h.
Simplify the function:
b(h) = 20 (4h²+12h+9)-14h-210+300
b(h) = 80h² +100h +270
The Answer is B
Each piece will be 26cm by 4cm.
Width is 26 cm.
Length is 36 cm. The problem states that the length is 10 cm longer than the width. Since width is 26 I just added 10 to arrive at 36 cm.
36 / 9 = 4 cm.
The width will still be 26 but the length is now 4 cm.
Area = length * width
Area = 4 * 26
Area = 104 cm
