Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.Ernesto is going to ship some gifts to family members, and he is considering two shipping companies. The first shipping company charges a fee of $11 to ship a medium box, plus an additional $2 per pound. A second shipping company charges $9 for the same size of box, plus an additional $3 per pound. At a certain weight, the two shipping methods will cost the same amount. How much will it cost? What is that weight?The two shipping methods both cost $_____ at a weight of _____ pounds.
Q. Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.Ernesto is going to ship some gifts to family members, and he is considering two shipping companies. The first shipping company charges a fee of $11 to ship a medium box, plus an additional $2 per pound. A second shipping company charges $9 for the same size of box, plus an additional $3 per pound. At a certain weight, the two shipping methods will cost the same amount. How much will it cost? What is that weight?The two shipping methods both cost $_____ at a weight of _____ pounds.
Define Variables: Let's define two variables: let x be the weight of the package in pounds, and let y be the total cost to ship the package. We can write two equations based on the information given for each shipping company.For the first shipping company: y=11+2x (since it charges $11 plus $2 per pound)For the second shipping company: y=9+3x (since it charges $9 plus $3 per pound)At the weight where the two shipping methods cost the same, the y values will be equal, so we can set the two equations equal to each other to find the weight x.y0
Write Equations: Now we solve for x by subtracting 2x from both sides of the equation to get the x terms on one side:11+2x−2x=9+3x−2xThis simplifies to:11=9+x
Solve for Weight: Next, we subtract 9 from both sides to solve for x: 11−9=9+x−9This simplifies to:2=xSo the weight at which both shipping methods cost the same is 2 pounds.
Substitute Weight: Now that we have the weight, we can substitute x=2 into either of the original equations to find the cost y. We'll use the first company's equation:y=11+2xy=11+2(2)y=11+4y=15So the cost at which both shipping methods cost the same is $15.
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