Answer:
No Solution.
Given Equations:
- 3x + y = 15 ....[Equation 1]
- y = -3x + 8 ....[Equation 2]
Substitute Equation 2 into 1
No solution, as L.H.S ≠ R.H.S
B. If you were to solve for a, the a values would be 12 and 16 in the equation.
Y=2x+3 (equation 1)
3x-5y=6 (equation 2)
Sub equation 1 into equation 2
3x-5(2x+3)=6
3x-10x-15=6
3x-10x=6+15
-7x=21
x=-3
Sub x=-3 into equation 1
y=2(-3)+3
y=-6+3
y=-3
I believe there is only one solution: y and x both equal -3.
So, start with the growth formula
A=P(1+r)^t then plug in the values
6200=5200(1+.038)^t
then divide both sides by 5200
1.1923076923=1.038^t
then take the log of both sides
log(1.1923076923)= t log(1.038)
then divide both sides by the log(1.038)
4.7161004299=t
then round it to the nearest whole number
5=t
so about 5 months