Ans is 8 and -1
8 + (-1) = 7
and
8 * (-1) = -8
4x + 2y = 20
3x - y = 10
Multiplying second equation by 2.
6x - 2y = 20
Adding to the first,
10x = 40
x = 4
y = 3x - 10 = 3(4) - 10 = 2
Answer: (4, 2)
Check:
4(4) + 2(2) = 16+4 = 20, good
3(4) - 2 = 12 - 2 = 10, good
Answer:
Step-by-step explanation:
For each consecutive year after that, their profit increased by 12%. The growth is exponential. We would apply the formula for exponential growth which is expressed as
A = P(1 + r)^t
Where
A represents the profit made after t years.
t represents the number of years.
P represents the initial profit made.
r represents rate of increase.
From the information given,
P = 2.4 × 10^6
r = 12% = 12/100 = 0.12
t = 4 years
Therefore,
A = 2.4 × 10^6(1 + 0.12)^4
A = 2.4 × 10^6(1.12)^4
A = 3776446.5
