Answer:
B
Step-by-step explanation:
See attached image for table and graph.
Looking at Candy Lane, we can see that
1 cost 8
2 cost 16
3 cost 24
....etc
That tells us that unit rate is $8
Now, looking at graph of Best Fudge, we can see that
at x = 1, y = 3
at x = 2, y = 6
...
etc.
So we can say unit rate is $3.
Certainly, unit rate of Best Fudge is less than unit rate of Candy Lane. Answer choice B is right.
The instantaneous rate of change of the function f(x) = −4x² − 3x + 1 at the point x = -3 is 21.
<h3>What is the instantaneous rate of change of the function at the given point?</h3>
The instantaneous rate of change is simply the change in the derivative value at a specific point.
Given the data in the question;
- f(x) = −4x² − 3x + 1
- Point x = -3
To determine the instantaneous rate of change of the function, first find the derivative of the function.
f(x) = −4x² − 3x + 1
Applying sum rule, with respect to x
d/dx[ -4x² ] + d/dx[ -3x ] + d/dx[ 1 ]
[ 2 × -4x¹ ] + [ 1 × -3x⁰ ] + d/dx[ 1 ]
[ -8x ] + [ -3 ] + d/dx[ 1 ]
-8x - 3 + d/dx[ 1 ]
Differentiate using constant rule
-8x - 3 + [ 0 ]
-8x - 3
f'(x) = -8x - 3
Next, plug x = -3 into the derivative and simplify.
f'(x) = -8x - 3
f'(-3) = -8(-3) - 3
f'(-3) = 24 - 3
f'(-3) = 21
Therefore, the instantaneous rate of change of the function f(x) = −4x² − 3x + 1 at the point x = -3 is 21.
Learn more about instantaneous rate of change here: brainly.com/question/28122560
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Answer:
This is the equation
Step-by-step explanation:
Answer:
Step-by-step explanation:
cost of 25 kg =262.50x25
=6562.5
Answer:
07
Step-by-step explanation:
3z - 7 = 14
3•7=21
21 - 7 = 14
