Answer:

Step-by-step explanation:
Given: Number of students who were given Cardinal Credits last week for good behavior = 14
Number of students who were given Cardinal Credits this week for good behavior = 22
To find: percent increase in number of students who were given Cardinal Credits
Solution:
Increase in number of students = 22 - 14 = 8
Percent increase in number of students who were given Cardinal Credits = Increase in number of students / Number of students who were given Cardinal Credits last week for good behavior × 100 
1: B
because a triangle angles all have to add up to 180
Answer:
what is this
Step-by-step explanation:
Step 1.) Multiply both sides of the equation by -6
step 2.) Sum the equations vertically to eliminate at least one variable
step 3.) Divide both sides of the equation by
step 4.) Substitute the given value of into the equation x - 2y = 10
step 5.) Solve the equation for x
step 6.) The possible solution of the system is the ordered pair (x , y)
step 7.) Check if the given ordered pair is the solution of the system of equations
step 8.) Simplify the equalities
step 9.) Since all of the equalities are true, the ordered pair is the solution of the system
So your answer would end up being (40/13 , -45/13) !! Hope that helps you out :D !!
5(2x-3)-(x+8)=13
10x-15-x-8=13
9x-23=13
9x=36
x=4