If f(x) = 4 - 7x then x = -f/7, 0
but if
f(x) = 0 then x = 0.
Answer:
Option A is correct
Step-by-step explanation:
Given is a table which shows data from a survey about the amount of time students spend doing homework each week.
College HS
High 50 16
Low 5 0
Q1 7.5 9.5
Q3 15 14.5
IQR 7.5 5
Median 11 13
Mean 13.8 10.7
Std dev 6.4 5.3
1.5IQR 11.25 7.5
Q1-1.5IQR -9.38 -12
Q3+1.5IQR 37.5 29.5
WE find that there is only one outlier in college with 50 as high.
Except that all others are well within IQR range. Hence outliers are minimum
So option A is right.
We can substitute 4b with 12, because 4 * 3 = 12. 4b is the same as 4 different b's, and when we know b is 3, we can multiply 4 by 3 to get 12.
7 + 4b =
7 + 4 * 3 =
7 + 12 =
19.
7 + 4b when b = 3 is 19.
2.10x+5=40
The answer is 2.10x+5=40 because 2.10 is for every mile theydrive they add and extra 2.10 and 5 is for the tip