Suppose that a phone card has 400 min. Write a relationship that represents the number of minutes remaining r(x) as a function of the number of minutes already used x.

Q: Teach how to come up with a function that gives the amount of samarium-153 that remains h hours…

A: Let P be the initial amount and let A be the amount remains after h hours

Q: We have seen that temperature in Fahrenheit is a function of temperature in Celsius. Is it also true…

A: It is given that Farenheit is a function of temperature in Celcius.And the temperature in Celsius…

Q: If 150 bags are demanded per month when the price is $75 per bag and the amount demanded fell to 100…

A: Equation of a line passing through the point (a,b) and (c,d) is given by: y-d=m(x-c)    OR…

Q: If this trend continues, write a function that gives the student population at Calamanco High School…

A: Part A: Let f(x) denote the number of students studying at Calamanco high school after x years since…

Q: If the car is to be rented for one day, express the total rental expense as a function of the number…

A: Given that a car is rented for one day and is charged $0.45 per mile driven. If x miles are driven ,…

Q: The price of 1 gallon of unleaded gasoline at the pump dropped to $2.19 on January 1, 2015, and…

A: As the price of  1 gallon of unleaded gasoline is decreasing  4 cents per month starting from…

Q: Sketch the Function y= X+2

A: Given function : y=x+2

Q: A hot air balloon is at 400 feet above sea level and begins rising at a rate of 105 feet per minute.…

A: The rate is equal to the slope of the linear relationship between balloon elevation as a linear…

Q: The second edition of a textbook was 799 pages long. By the time it got to the sixth edition the…

A: Suppose, L represents page length and n represents the edition number. The points are written as (n,…

Q: Which of the functions has the y-axis as the line of symmetry?

A: Generally we check three kinds of symmetries for the graphs. Symmetry about X axis Symmetry about Y…

Q: A bathtub that intially holds 65 gallons of water starts draining at rate of 8 gallons per minute.…

A: Construct a function for the number of gallons of water W (t) in the tub after t minutes of draining…

Q: A certain chocolates bar costs 35.00 per piece.however,if you buy more than 10 pieces,they will…

A:

Q: A Monthly Subscription Service charges half price for it's first month ($4.95) and increases to…

A:

Q: during typhoon ambo, Pagasa tracks the amount of accumulating rainfall.for the first three hours of…

A: Given- During typhoon Ambo, Pagasa tracks the amount of accumulating rainfall. For the first three…

Q: Describe the relationship of input and output values for composite functions

A: Use the definition of composition of two functions.

Q: Une of the largest sewing machines in the world has a flywheel (which turns as the machine sews)…

A: The motion of a wheel is very significant in trigonometry. It is a periodic motion. Therefore, the…

Q: office depot sells TI-84 plus calculaters for $100 each. In a typical august (right before school…

A:

Q: The average price for a movie ticket in Detroit, Michigan was $8 in 2010, and it increases at 7% per…

A: To Determine: The average price for a movie ticket in Detroit, Michigan was $8 in 2010, and it…