J=john
m=mary
j is 2 times as old as mary
j=2 times m
sum is 21
m+j=21
find mary
subsitute
j=2m therefor subsitute 2m for j
m+2m=21
add like terms
3m=21
divide by 3
m=7
mary=7
*HOPE I HELPED!*
Answer:
The answer most likely would be x > -3
Step-by-step explanation:
It would be this because it's a opened dot and not a closed one. A closed dot would have the greater or less than sign with the line underneath it
REMEMBER if it is shaded to the right then the inequality points to the right (>). If it is shaded to the left the inequality points to the left (<)
HOPE THIS HELPS
£733 because that’s is only yearly,so it won’t go up much with that rate
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