Solve the Problem. -A Couple Have Bought a New House and Are Comparing

question 20

Multiple Choice

Solve the problem.
-A couple have bought a new house and are comparing quotes from two moving companies for moving their furniture. Company A charges $120 for the truck and $55 per hour for the movers. Company B charges $110 for the truck and $70 per hour for the movers. Create a cost equation for each company where y is the total cost and x is the number of hours of labor. Write a system of equations.

• A) 55y = 120x
• B) 55y = x + 120
• C) y = 55x + 120
• D) y = 120x + 55 70y = 110x 70y = x + 110 y = 70x + 110 y = 110x + 70

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Definitions:

Sodium-Potassium Pump

The sodium-potassium pump is a membrane-bound enzyme critical for cellular function, actively transporting sodium out of and potassium into cells, helping maintain cellular electrochemical gradients.

Action Potential

An action potential is a rapid electrical impulse that travels along the membrane of a neuron or muscle cell, facilitating communication and response.

Plasma Membrane

A two-layer lipid membrane that surrounds the cytoplasm within a cell, governing how substances move in and out.

Depolarization

The process during which a cell's membrane potential becomes less negative, making it more likely to fire an action potential.