The equation 21 + 0.25p = c gives the cost in dollars that a store charges to deliver an appliance that weighs pounds. Use the equation and a table to find the weight of an appliance that costs dollar 56 to deliver.
To find the weight of an appliance that costs $56 to deliver, we can substitute the given cost into the equation 21 + 0.25p = c and solve for p.
Let's set c = $56 and solve for p:
21 + 0.25p = 56
Subtract 21 from both sides:
0.25p = 56 - 21
0.25p = 35
Divide both sides by 0.25:
p = 35 / 0.25
p = 140
Therefore, the weight of an appliance that costs $56 to deliver is 140 pounds.
To find the weight of an appliance that costs $56 to deliver, we can use the equation 21 + 0.25p = c, where c represents the cost in dollars and p represents the weight in pounds.
Let's create a table to solve the equation:
Weight (p) | Cost (c)
-----------------------
1 | 21.25
2 | 21.50
3 | 21.75
4 | 22.00
5 | 22.25
... | ...
-----------------------
56 | ?
We need to find the weight (p) when the cost (c) is $56.
Looking at the table, we can see that the cost increases by $0.25 for every increase of 1 pound.
We can determine the weight of an appliance that costs $56 to deliver by finding the difference between $56 and $21, and then dividing by $0.25:
(56 - 21) / 0.25 = 140 / 0.25 = 560
Therefore, an appliance that costs $56 to deliver weighs 560 pounds.