Answer:
60 seconds
Step-by-step explanation:

When Ying reaches his lowest altitude, his velocity is 0.
The velocity, v(x) is the tiome-derivative of D(x).

(This was done by using chain rule)
Equating v(x) to 0,



Looking at the purple area, we see that 1≤y≤3. So we can immediately reject answers (d), (a).
Since the purple area is to the right of and above the sloping line, we choose answer (c).
The correct answer to the whole problem is (c).
The factored form of a - b is
.
<h3>What is monomial factorization ?</h3>
A monomial is an expression that is the product of constant and non-negative integer powers of x, like
..
A monomial is expressed as a product of two or more other monomials when it is factored.
Here,
a = 125

To find: a - b
a - b = 125 - 
a - b = 
We know that,

Finding the factored form of a - b using this method:


So, factored form of a - b is
.
Learn more about monomial factorization here:
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Y = <span>b^x
when x = 1
y = b^1
y = b
Therefore, the value of b is the same as the value of y when x =1
From the graph,
When x = 1, y = 0.5
Therefore, b = 0.5
To confirm this
From the graph,
When x = -1, y = 2
Since </span>y = b^x<span>
2 = </span>b^-1
2 = 1/b
2b = 1
b = 0.5
When x = -2, y = 4
Since y = b^x
4 = b^-2
4 = 1/(b^2)
b^2 = 1/4
b = √(1/4)
b = 1/2
b = 0.5
Therefore, it is conformed that b = 0.5
Answer:
B. Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.
Step-by-step explanation: