Yesterday, Selma read 75 pages of her book. If she reads at a pace of 2 pages per minute today, which table shows only viable
2 answers:
Answer:
Option D.
Step-by-step explanation:
Consider the below image attached with this question.
It is given that yesterday Selma read 75 pages of her book and she reads at a pace of 2 pages per minute today. It means
Initial value = 75
Slope = 2
She has read, y, after x minutes have elapsed.
The slope intercept form of a line is
where, m is slope and b is y-intercept.
At x=0,
At x=11,
At x=20.25,
At x=58,
Table of values
x y
0 75
11 97
20.25 115.5
58 191
Therefore, the correct option is D.
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Answer:
Chris will take 0.75 seconds to return to his starting height of 10 feet.
Step-by-step explanation:
Let the height of Chris be represented by , where
is the height in feet and
, the time in seconds. First, we equalize the formula to a height of 10 feet and simplify the resulting expression, that is:
Then, we simplify the expression by algebraic means:
Roots of the polynomial are, respectively:
First root represents the initial height of Chris, whereas the second one represents the instant when Christ returns to the same height above the surface of the water. Hence, Chris will take 0.75 seconds to return to his starting height of 10 feet.
