Deliveries The equation 25 + 0.25p = c gives the cost c in dollars that a store charges to deliver an appliance that weighs p pounds. Use the equation and a table to find the weight of an appliance that costs $55 to deliver. Understanding the Problem

1.
What information are you given about the situation? What is the relationship between the delivery charge and the weight of an appliance?

2
What are you being asked to determine?

Planning the Solution

3.
How can you determine the cost to deliver an appliance that weighs 50 pounds?

4.
Make a table that shows the delivery charge for appliances of various weights. Your table should include the weight of an appliance that produces the desired delivery cost.

Getting an Answer

5.
What is the weight of an appliance that costs $55 to deliver?

I need help plzz i'm giving away 60 points.

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?