Answer: 
Step-by-step explanation:
Given : At the beginning of the season, MacDonald had to remove 5 orange trees from his farm.
Each of the remaining trees produced 210 oranges for a total harvest of 41790 oranges.
The equation to determine the initial number of orange trees "t" on MacDonald's farm will be :-

Simple.....
you have this fraction...

simplify...
42/6=7
and
60/7=10
Thus...

Thus, she has saved

of the money.
Third option is the right answer:
−2x + 4y ≥ 0
Answer:
x=17/3, y=59. (17/3, 59).
Step-by-step explanation:
y=6x+25
y=12x-9
--------------
6x+25=12x-9
12x-6x-9=25
6x-9=25
6x=25+9
6x=34
x=34/6=17/3
y=12(17/3)-9=4*17-9=68-9=59
A. d=50t B. 50,100,150,200,250 C. 50 days