Using the graph below, what is the best estimate of how much gas is used on a 250-mile car trip if the equation for the line of
the best fit is y=0.03x+0.25
2 answers:
Answer:
A. 7.8 gallons.
Step-by-step explanation:
We have been given the equation of line of best fit . We are asked to find the estimated amount of gas used on a 250 mile trip.
We can see that x-axis represents number of miles and y-axis represents gallons of gas used.
To find amount of gas used on a 250 mile trip, we will substitute in our given equation as:
Therefore, 7.8 gallons of gas will be used on a 250 milt trip and option A is the correct choice.
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Answer:
2 students study none of the subjects.
Step-by-step explanation:
Consider the attached venn diagram. First, we place that 1 student studies the three subjects. Then, we notice that 3 students study math and science, then 2 students study math and science only, since we have 1 that studies the three subjects. In the same fashion, we have that 3 students study Math and computer programming only (since they are 4 in total). Note that since 7 students study math, and we already have 6 students in our count in the math subject this implies that 1 student studies only math (the total number of students inside the math circle must add to 7).
We also have that 4 students study science and computer programming only. Which implies that we must have 3 students that study science only (10 students that study science in total) and 2 students study computer programming (for a total of 10 students). The total number of students that study none is the total number of students (18) minus the amount of students that is inside the circles (16) which is 2.
