Marianna had an average of 84.6 in social studies before her final exam. After the final exam, her average changed to 82.9. Question 1 Part A Show how Marianna‘s average changed in social studies. Enter the correct answers in the boxes.

answer: 72: 111

step-by-step explanation:

answer: 60%

explanation:

÷

= 60%

let

step

find the slope of the line ab

we know that

the formula to calculate the slope between two points is equal to

substitute the values

step

find the equation of the line ab with the slope m and point a

we know that

the equation of the line in the slope-point form is equal to

substitute the values

convert to function form

let

therefore

the answer is the option

see the attached figure to better understand the problem

a recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent.