Answer:
Step-by-step explanation:
Answer:
x=59
Step-by-step explanation:
x+12+x+x-9=180
3x+3=180
-3 -3
3x=177/3
x=59
-5+(-4)
-5-4
-9
Therefore, -9 is the correct answer
Answer:
a) as the time increases by one year the hight of the tree is increasing by 15
b)
h=90+(t*15)