Question

The relationship between the hours spent studying and the average grade on a science test has been proven to be linear. The average grade for a student who studied 1 hour was a 76% and for a student who studied 4 hours was a 94%. Write the linear equation representing this scenario and then find how many hours of studying would have resulted in a grade of 88%.

Answer 1

o.o

Answer 2

1 hour = 76% | 4 hours = 94%
There's a difference of 18% and 3 hours, so you can find the ratio easily.
1 = 76
2 = 82
3 = 88
4 = 94
Equation:
Grade = 70 + 6h | h --> hours
88 = 70 + 6h
h = (88 - 70) / 6 --> h=3

Answer 3

Thank you for all that hard work. <3

Answer 4

you're welcome)