`C=60+0.05d`
The equation above represents the total monthly cost, C, in dollars of a data plan offered by a cell phone company when the data usage in a month exceeds a 1 gigabyte limit by d megabytes. According to the model, what is the meaning of 0.05?

The equation above represents the cost in dollars, C, of a cable television subscription that includes n premiium high-definition channels. Acording to the model, what is the meaning of the constant 65 in the equation?

y = 19.99 + 1.50x The equation above models the total cost y, in dollars, that a company charges a customer to rent a truck for one day and drive the truck x miles. The total cost consists of a flat fee plus a charge per mile driven. When the equation is graphed in the xy-plane, what does the y-intercept of the graph represent in terms of the model?

r=2.24+0.06t p=2.89+0.10x In the equation above, r and p represent the price per gallons, in dollars, of regular and premium grades of gasolin, respectively, x months after January 1 of last year. What was the cost per gallon, in dollars, of premium gasoline for the month in which the per gallons price of premium exceeded the per gallon price of regular by $0.93?

7x+y=133 Jaffrey has set a monthly budget for purchasing frozen blended mocha drinks from his local SpendBucks coffee shop. The equations above can be used to model amount of his budget, y, in dollars that remains after buying coffee for x days in a month. What does it mean that (19.0) is a solution to this equation?

A mass of 0.5 kg is hung from a spring. A gradually increasing 0.5 N force is required to pull the mass downward a distance of 0.25 m from its equilibrium position,if the mass is then released from this position, find (a) The total energy of the system . (b) The frequency of the oscillation (c ) The speed and acceleration of the mass as it passes the equilibrium position. (d) The speed and acceleration of the mass when the diplacement from equilibrium is 0.25 m (e) For the initial condition stated, write down the diplacement equation of motion for this mass.