The standard form:
1.
subtract 5x from both sides
change the signs
2.
add 4x to both sides
3.
multiply both sides by 3
subtract 2x from both sides
4.
multiply both sides by 2
add x to both sides
5.
add 5x to both sides
6.
multiply both sides by 4
subtract 3x from both sides
The answer is in the image
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
For every 8 cars there are 7 trucks
Therefore,
Cars:Truck=8:7
Answer is B)8:7
F=ma
where F=force
m=mass
a=acceleration
Here,
F=4300
a=3.3m/s2
m=F/a
=4300/3.3
=1303.03kg
Approximately it is aqual to 1300kg
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