Asked by Kavita
Jen Planted a 7 ft tee, tree grows 3 ft each year. Now tree is 4times original height. How many year ago was tree planted.
Is the equation y=3x+7 right, where y= 7*4 and x= no of years
Is the equation y=3x+7 right, where y= 7*4 and x= no of years
Answers
Answered by
Bosnian
Yes
y = 3 x + 7 = 4 * 7 = 28
3 x + 7 = 28
3 x = 28 - 7 = 21
x = 21 / 3 = 7 yrs
7 ft + 7 * 3 ft = 7 ft + 21 ft = 28 ft = 4 * 7 ft
y = 3 x + 7 = 4 * 7 = 28
3 x + 7 = 28
3 x = 28 - 7 = 21
x = 21 / 3 = 7 yrs
7 ft + 7 * 3 ft = 7 ft + 21 ft = 28 ft = 4 * 7 ft
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