Question

A truck that can carry no more than 6900lb is being used to transport refrigerators and upright pianos. Each refrigerator weighs 300 lb and each piano weighs 525 lb. Write and graph an inequality to show how many refrigerators and how many pianos the truck could carry. Will 12 refrigerators and 9 pianos overload the​ truck? Explain. Question content area bottom Part 1 Let x be the number of refrigerators in the truck and y be the number of pianos in the truck. Write an inequality to show how many refrigerators and how many pianos the truck could carry.

Answer 1

Answer: Hi

We can use the information given to set up the inequality:

Weight of refrigerators + weight of pianos <= 6900 (since the truck can carry no more than 6900 lb)

We can use the weight of each item to write the inequality in terms of x (number of refrigerators) and y (number of pianos):

300x + 525y <= 6900

To graph the inequality, we can use the x and y values as coordinates and plot them on a coordinate plane. The line representing the inequality would be a boundary line, with all the points that satisfy the inequality on one side of the line, and all the points that do not satisfy the inequality on the other side of the line.

To check if 12 refrigerators and 9 pianos will overload the truck, we can substitute these values into the inequality:

300(12) + 525(9) = 3900 + 4725 = 8625

Since 8625 is greater than 6900, which is the maximum weight the truck can carry, 12 refrigerators and 9 pianos would overload the truck.

Explanation:

To sum up, the inequality 300x + 525y <= 6900 represents the weight that the truck can carry. The points that satisfy the inequality (such as (4, 6) or (10, 3)) would represent a combination of refrigerators and pianos that the truck can carry, while the points that do not satisfy the inequality (such as (12, 9)) would represent a combination that overloads the truck.