The graph is concave has two curved part as follows;
- The graph is concave up between;(0, 1), and (1, 0)
- The graph is concave down between; (0, 1), and (-a, 2)
<h3>How can the direction of concavity be found?</h3>
The direction the concave part of the graph faces is given as follows;
The graph is concave up when the concave part faces up
It is concave down when the concave part faces down
From the given diagram, we have;
The graph is concave up between;
(0, 1), and (1, 0)
The graph is concave down between; (0, 1), and (-a, 2)
Where <em>a </em>is in the range; 1 < a < 2
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Answer: Step 1: Reverse the signs of 
expression.
Step 2: Removing parenthesis
Step 3: Grouping like terms
Step 4: Combing like terms
Step 5: Writing the final expression in standard form
Step-by-step explanation: First expression :
Second expression : 
.
We need to subtract from .
Step 1: Reverse the signs of expression.
Step 2: Removing parenthesis
Step 3: Grouping like terms
![[-3x^3) + (-6x^3)] + [4x + 2x] + [(-7) + (-3)] + [5x^2]](https://tex.z-dn.net/?f=%5B-3x%5E3%29%20%2B%20%28-6x%5E3%29%5D%20%2B%20%5B4x%20%2B%202x%5D%20%2B%20%5B%28-7%29%20%2B%20%28-3%29%5D%20%2B%20%5B5x%5E2%5D)
Step 4: Combing like terms
Step 5: Writing the final expression in standard form
There are 4 of each card so 4 kings and there is 13 cards so 13 chances of a heart so 4/52+13/52= 17/52 is your answer.
<u>Add</u> them all up, 3.2 + 1.75 + 1.9 = <u>6.85</u>
The total weight is <u>6.85</u> pounds.
