I think it’s 5 but don’t get mad if it’s wrong
For this case, the first thing we must do is define a variable.
We have then:
x: additional amount of weight that Li can add.
We write now the inequality that represents the problem.
We have then:
Answer:
An inequality that can be used to determine how much more weight can be added to the suitcase without going over the 50-pound weight limit is:
Statement 1 is false because the domain of f is all real numbers since the function is quadratic.
Statement 2 is true<span>.
Statement 3 is true because when we graph f, it is a parabola opening upwards with vertex (3, -1). Since it is opening upward, then the value of x from -</span>∞ to 3 is decreasing while increasing from 3 to ∞.
<span>
Statement 4 is false because we just stated above that f is decreasing from -</span>∞ to 3. Hence, f is also decreasing from -1 to 3. Hence, f is not increasing from -1 to <span>∞.
</span><span>Statement 5 is false because the axis of symmetry is x = 3.
Statement 6 is true.</span>
<span>A) X + y + z = 7
B) 2x − y + z = 7
C) 3x − z = 2
</span><span>C) z = 3x -2 Substituting this into equations A) and B)
</span>
<span>A) X + y + 3x -2 = 7
B) 2x − y + 3x -2 = 7 Adding A and B
3x + 6x -4 = 14
9x = 18
x = 2
</span>Since x = 2 then
<span>A) 2 + y + 6 -2 = 7
</span><span>A) y = 1
</span>A) X + y + z = 7
<span>A) 2 + 1 + z = 7</span>
z = 4