That equation just equals ln(e^(-4/3)) which can be simplified to -4/3 because ln and e cancel each other out only leaving the power
To find the total cost, you need to add these numbers together

you get 7.37 as your answer, but you need to round this to the nearest whole number.
rounding 7.37 will make it 7.
the total cost is about $7
The correct answer is -3.6. Hope this helps!!
Answer:
5 minutes
Step-by-step explanation:
To get the response to this question, it would be required to convert both times to seconds alone.
For the first, the time It takes to flash is 1 minute 15 seconds which is same as 75 seconds
For the second, it takes 1 minute 40 seconds which is same as 100 seconds.
Now to get the time they would flash together, we need to know their lowest common multiples. The values involved are 75 and 100. Thus, the lowest common multiple of both is 300.
This is equivalent to 300 seconds which is 5 minutes time
-1/2(x-6)-1/4(x-4)-(x-7)= ?
Simplify 1/4
1 ÷ 4 = 0.25
Simplify 1/2
1÷2 = 0.5
The lowest common denominator of this problem is 4
16 - 3(x) / 4 - ( x - 7)
44 - 7(x) / 4
-7(x)+44 = 0
-7 - 44 = -51
-7 - 0 = -7
-7(x) = 44
-7(-1)(x) = x
-1(44) = -44
44 ÷ 7 = 6.28
We have have one solution in this problem
So, therefore x = 44/7