Last week, Chen bought 8 1/2 gallons of gas at $2.30 per gallon. This week, he bought 4 3/10 gallons of gas at $2.70 per
2 answers:
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Answer:
Step-by-step explanation:
2)
a) elimination method
b) substitution method
c) substitution method
For the first part we can elimate the y variable by subtracting the equations. We can then find the value of x.
For the second part we can substitute y as 2x+5 in the second equation and solve for x.
For the third part we can substitute y as 4x+3 in the first equation and solve for x.
3)
