Answer:
75a + 90b ≤ 70000
a ≤ b
Step-by-step explanation:
Maple grove wants to include 2 types of maple trees .The 2 trees that are to be added cost $75 and $90 each. The total amount should not exceed $70000. And the people wants more of the $90 tree.
Let
the number of the $75 tree = a
number of the $90 tree = b
The total cost of the $75 variety of maple tree = 75a
The total cost of the $90 variety of maple tree = 90b
And the cost of the trees shouldn't exceed $70000. Therefore,
75a + 90b ≤ 70000
Note the people needs more of the $90 tree, this means a ≤ b.