Answer:
3 3
6 9
9 15
12 21
Step-by-step explanation:
For the time add 3 each time
For the distance add 6 each time
9x + 4 = 58
9x = 54
x = 6
The number is 6.
Answer:
72
Step-by-step explanation:
mean=average. to get average, you add up the numbers and divide by how many numbers. they add upp to 288 and since theres 4 test grades, divide by 4 to get 72.
Multiply her answer by -6 and see if the result is -108
