3x=45
(divide each side by 3)
x=15
You need to answer 15 correctly.
Answer:
Albert invested 21,000 and John invested 49,000 :)
When you solved for x in #16, you were looking for the value of x to see what x would make both angles congruent since they were alternate interior angles. The same solution x=8, is the solution to #17 when the two lines will intersect.
If you graph both lines they will intersect at x=8.
