Answer:
A:(4,2) B:(1,2) C:(1,3)
Step-by-step explanation:
During a rotation 90 degrees ccw the points go from (x,y) to (-y,x)
Simplifying
7x + -10x + 18 + 2x = -5
Reorder the terms:
18 + 7x + -10x + 2x = -5
Combine like terms: 7x + -10x = -3x
18 + -3x + 2x = -5
Combine like terms: -3x + 2x = -1x
18 + -1x = -5
Solving
18 + -1x = -5
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + -1x = -5 + -18
Combine like terms: 18 + -18 = 0
0 + -1x = -5 + -18
-1x = -5 + -18
Combine like terms: -5 + -18 = -23
-1x = -23
Divide each side by '-1'.
x = 23
Simplifying
x = 23
The median is 26 because if you put the numbers in order it’s 18,21,21,24,26,35,39,48 and the list of numbers is even so you can take out one of the 21 and the you get only 7 sets of numbers and the middle number is 26
If it was the exact spending as the previous year it would be $520 but doubled would be $1,040. Since there is not enough information in the problem I can not say for certain.
Y-1=2(x+3) just plug into the formula
