Answer:
3. 
2. 
1. 
Step-by-step explanation:
3. 2x - 5y = −7
- 2x - 2x
__________

2. 5x + 7y = 14
- 5x - 5x
__________

1. 6x + 3y = 12
- 6x - 6x
__________

I am joyous to assist you anytime.
Answer:
P(x) = 3.88x -1750
Step-by-step explanation:
Profit is the difference between revenue and cost.
P(x) = R(x) - C(x)
P(x) = 4.1x -(0.22x +1750) . . . . . substitute the given expressions
P(x) = 3.88x -1750 . . . . . . . . . . simplify
Answer:
I think number letter shape 14
Answer:
Step-by-step explanation:
new length=15+x
width=19+x
then area=(15+x)×(19+x)=285+15x+19x+x²=x²+34x+285 ft²
original area=15×19=285 ft²
then 285+98=x²+34x+285
or
x²+34x-98=0
x²+34x+17²=98+17²
(x+17)²=98+289=387
x+17=√387=3√43
x=3√43-17 ft