Tania analyzed the relationship between student test scores and the number of hours studied. she calculated the trend line to be y = 6.8x + 60, where x is the number of hours studied and y is the score. which closet is to the score for a student who studied 3 hours?
a 80
b 85
c 90
d 95

A: 80

Step-by-step explanation:

As we know that the trend line is , we can plug in x=3 in order to find out the estimated score for 3 hours of studying

y=80.4 is closest to A: 80

Option A, 80

Step-by-step explanation:

Trend line is given by y = 6.8x + 60

where x = number of hours she studied

          y = score

Now we have to calculate the score for a student for studied for 3 hours.

y = 6.8 × 3 + 60

  = 20.4 + 60

  = 80.40

  ≈ 80

Option A will be the answer.

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

hope this !

536

step-by-step explanation: