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A candle is made of 17 ounces of wax. When the candle is burning, the amount of wax in the candle decreases by 1 ounce every 4 hours. If 6 ounces of wax remain in this candle, for how many hours has it been burning?

John paid a total of $165 for a microscope by making down payment of $37 plus p monthly payments of $16 each. Which of the following equations represents this situation?

3 more than 8 times a number x is equal to 83. Which equation represents this situation?

The graph gives the estimated population y, in thousands, of a town x years since 2001, where 0≤ x ≤5 . which of the following best describes the increase in the estimated population from x = 0 to x = 1?

If a circuit consists of resistors connected in series, its resistance, in ohms, is equal to the sum of the resistances, in ohms, of all these resistors. A particular circuit consists of x identical resistors of type X and y identical resistors of type Y, which are connected in series. The resistance R, in ohms, of this circuit is given by the equation R = 13x +15y . Which of the following is the best interpretation of 13 in this context?

s =50 +4t
The equation gives the speed s, in miles per hour, of a certain car t seconds after it began to accelerate. What is the speed, in miles per hour, of the car 2 seconds after it began to accelerate?

f(x)= 3x+500
The function shown gives the total cost f(x), in dollars, for making x units of a certain product. What is the total cost, in dollars, for making 100 units of this product?

A model estimates that the population of a state was 3 million in 1980 and increased by 0.043 million each year until 2008. According to the model, what was the estimated population of this state, in millions, 10 years after 1980?

Scientists collected fallen acorns that each housed a colony of the ant species P. ohioensis and analyzed each colony's structure. For any of these colonies, if the colony has a worker ants, the equation y = 0.67x + 2.6, where \( 20\le x\le110 \) , gives the predicted number of larvae, y, in the colony. lf one of these colonies has 35 worker ants, which of the following is closest to the predicted number of larvae in the colony?

19.5x+24.25y=583
Odalys ordered mulch and river rock, which cost a total of $583, for her home. The given equation represents the relationship between the number of cubic yards of mulch, x, and the number of tons of river rock, y, Odalys ordered. How much more, in dollars, did a ton of river rock cost Odalys than a cubic yard of mulch?

f(x)=7x+3
The function f gives the estimated height, in feet, of a willow tree x years after its height was first measured. Which statement is the best interpretation of 3 in this context?

Harper deposited a fixed amount into her bank account each month. The function f(t)= 250+30t gives the amount, in dollars, in Harper's bank account after t monthly deposits. What is the best interpretation of 30 in this context?