Answer:
1. 7.66 x 10^4
2. 2.415×10²
Step-by-step explanation:
2. 8×105-5.7×105=241.5
A function assigns the values. The correct option is D.
<h3>What is a Function?</h3>
A function assigns the value of each element of one set to the other specific element of another set.
The given function
when plotted on the graph will look as shown below. Therefore, the function is increasing on the interval (–1, ∞).
Hence, the correct option is D.
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Let

we know that
The y-intercept is the y-coordinate of the point when the value of x is equal to zero
so
the y-coordinate of the point A is the y-intercept

<u>The answer part a) is</u>
The value of y-intercept is 
<u>Part b)</u> Find the slope m
we know that
the value of the slope is equal to

Substitute the values


therefore
<u>the answer Part b) is</u>
The value of the slope is equal to 
<u>The general answer is</u>
The slope is 
The value of y-intercept is 
Answer: C.) 1.12 seconds
Step-by-step explanation:
Hi, to answer this question we have to substitute h=0 (when the rock hits the ground the height above it is 0) in the equation given:
h (t) = –16t2 + 20
Solving for t (time)
0= –16t2 + 20
16t2=20
t2=20/16
t=√1.25 =1.12 seconds (option C)
Feel free to ask for more if needed or if you did not understand something.