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Mathematics
Step-by-step answer
P Answered by Specialist

Step-by-step explanation:

3\left(x-4+1\cdot \:b\right)=8

\mathrm{Divide\:both\:sides\:by\:}3

\frac{3\left(x-4+1\cdot \:b\right)}{3}=\frac{8}{3}

\mathrm{Simplify}

x-4+b=\frac{8}{3}

\mathrm{Subtract\:}b\mathrm{\:from\:both\:sides}

x-4+b-b=\frac{8}{3}-b

\mathrm{Simplify}

x-4=\frac{8}{3}-b

\mathrm{Add\:}4\mathrm{\:to\:both\:sides}

x-4+4=\frac{8}{3}-b+4

\mathrm{Simplify}

x=-b+\frac{20}{3}

Mathematics
Step-by-step answer
P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

Mathematics
Step-by-step answer
P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

Mathematics
Step-by-step answer
P Answered by PhD

The solution is in the following image

The solution is in the following image
Mathematics
Step-by-step answer
P Answered by PhD
The answer is in the image 

The answer is in the image 

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

The solution is given in the image below

The solution is given in the image below
Mathematics
Step-by-step answer
P Answered by PhD

Speed=Distance/time

Here,

distance=15m

time=1sec

speed=15/1=15m/sec

Distance=Speed*time

time=15min=15*60sec=900sec

Distance travelled in 15 min=15*900=13,500m

=13500/1000 km=13.5Km

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