Asked by madiiiii123
some years ago, Marcus planted a 7-foot tree in his front yard. The tree grew 3 feet each year. Now the tree is four times the original height.
How many years ago did Marcus plant the tree?
How many years ago did Marcus plant the tree?
Answers
Answered by
cece
9 years ago because 7*4=28, and 28/3 is 9.
Answered by
Ms. Sue
No, Cece.
4 * 7 = 28
28 - 7 = 21
21/3 = ?
4 * 7 = 28
28 - 7 = 21
21/3 = ?
Answered by
Reiny
height = 3x + 7 , where x is the number of years
when is 3x+7 = 28 ?
3x = 21
x = 7
It will take 7 years to grow to 28 ft
check:
now -- 7
after 1 year -- 10
2years -- 13
3 years --16
4 years -- 19
5 years -- 22
6 years -- 25
7 years -- 28
when is 3x+7 = 28 ?
3x = 21
x = 7
It will take 7 years to grow to 28 ft
check:
now -- 7
after 1 year -- 10
2years -- 13
3 years --16
4 years -- 19
5 years -- 22
6 years -- 25
7 years -- 28
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