Step-by-step explanation:
the calculation is included. I hope its self explanatory
4a + 6b = 10
2a - 4b = 12...multiply by -2
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4a + 6b = 10
-4a + 8b = - 24 (result of multiplying by -2)
------------------add
14b = - 14
b = -14/14
b = -1
2a - 4b = 12
2a - 4(-1) = 12
2a + 4 = 12
2a = 12 - 4
2a = 8
a = 8/2
a = 4
so 12a = 12(4) = 48 <==
<span>y=15.2-0.537x substitute 9 for y
9</span><span>=15.2-0.537x add .537x to both sides and subtract 9 from both sides
.537x =6.2 divide both side by .537
x= 11.545 round it to 12</span>
x +80 >-3x
add 3x to each side
4x+80 >0
subtract 80 from each side
4x>-80
divide both sides by 4
x > -80/4
x>-20
The value of the growth factor of the function is 15. To add to your answer, exponential growth happens when the rate of the number of the function corresponds with the present value of the function. This then lets its increase together with time be called an exponential function.
