Answer:
The answer is attached to the picture
Answer:
Cam expect to earn if he sells all the corn produced on 1.5 acres is $8725.
Step-by-step explanation:
Given :
,
and 
To find : How much can Cam expect to earn if he sells all the corn produced on 1.5 acres?
Solution :

Substitute a=1.5,



Now, taking function 
Substitute C=9750,



Now, taking function 
Substitute a=1.5,



Therefore, Cam expect to earn if he sells all the corn produced on 1.5 acres is $8725.
Answer:
b. y=sec(x/3) and y=-1
Step-by-step explanation:
sec(x/3) + 4 > 2 − sec(x/3)
2 sec(x/3) > -2
sec(x/3) > -1
Graph y = sec(x/3) and y = -1.
(x+4)(x-4) =0
x +4 = 0
x = -4
x - 4 =0
x = 4
answers , x = -4 and x=4