Exam Grades Hours of Study Exam Grade
1
78
2
80
3
78
3
82
4
84
5
86
According to the table is the exam grade a function of the number of hours spent studying?
w
Yes, it is a function because no one failed the test.
A)
B)
Yes, it is a function because the student who studied more hours made the
best grade
Yes, it is a function because the exam grade increases by 2 points for each
hour studied
No, it is not a function because the input value of 3 hours has 2 different
output values of 78 and 82.
D)

The correct answer is D

Step-by-step explanation:

UsaTestprep says so

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x