Question 989322
 A pine tree is currently 9 feet tall and grows 6 inches every year.
 You plant a new variety of tree next to it that is 16 inches tall and grows 14 inches a year.
 When will the two trees be equal in height, and how tall will they be?
 Round the values to the nearest tenth.
:
let t = no. of years after planting the 2nd tree they will be equal in height
:
Change 9 ft to inches: 9 * 12 = 108 inches
14t + 16 = 6t + 108
14t - 6t = 108 - 16
8t = 92
t = 92/8
t = 11.5 yrs, they will be equal height
and
14(11.5) + 16 = 177 inches high
check this with 1st tree
6(11.5) + 108 = 177 inches
:
That would be 14 ft 9 inches high