Mr. Mole left his burrow and started digging his way down.
2 answers:
Answer:
Mr. Mole descends 2.3 meters per minute.
Step by step explanation:
We have been given a function: , which models Mr. Mole's altitude relative to the ground (in meters) after t minutes. We are asked to find how fast Mr. mole descend.
We can see that at time equals 0 minutes, Mr. Mole's altitude is 7 meters below the ground, so -7 represents y-intercept.
We can also see that slope of our given function is -2.3, which represents change in Mr. Mole's altitude with respect to time in minutes. Since our slope is negative, so Mr. Mole's altitude is descending by 2.3 meters per minute.
Therefore, Mr. Mole is descending by 2.3 meters per minute.
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Answer: 500 people
Step-by-step explanation:
Let there are x people in the survey.
According to the question,
People who like football as their favorite sports = 42 % of x = 0.42 x
People who like baseball as their favorite sports = 33 % of x = 0.33 x
People who like soccer as their favorite sports = 25 % of x = 0.25 x
But, 210 people said football was their favorite sport.
⇒ 0.42 x = 210
⇒ 42 x = 21000
⇒ x = 500
Therefore, there are 500 people in the survey.
