Let x be the amount of money Brian had in his account before he wrote the check. Brian spent $105, which we must subtract from the total. After the subtraction, we have $536 left, so the equation is

Answer:
It would be 2242.5
Step-by-step explanation:
1950X0.15=292.5
292.5+1950=2242.5
<span>X Y = (1/2)^x
-3 (1/2)^(-3) = 2^3 = 8
-2 (1/2)^(-2) = 2^2 = 4
-1 (1/2)^(-1) = 2
0 (1/2)^0 = 1
1 (1/2)^1 = 1/2 = 0.5
2 (1/2)^2 = 1/4 = 0.25
3 (1/2)^3 = 1/8 = 0.125
The graph is shown in the picture attached.
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0.05x + 0.06y = 438
x + y = 8000
x + 1.2y = 8760
x + y = 8000
Subtract equations
0.2y = 760
y = 3800
8000-3800 = x = 4200
$4200 into 5%
$3800 into 6%
Answer:
20
Step-by-step explanation:
100 expressed as a logarithm to base 10 will be 
The question is then framed as

Introduce logs on both ends

Since both sides have base of 10 then we drop the bases and solve the question as
0.5w=10
Making w the subject of the formula
w=10/0.5=20
Therefore, w=20