3) A trader bought some paraffin for $500. He paid $x for each litre of paraffin. a) Find, in terms of x, an expression for the number of liters he bought. b) Due to a leak, he lost 3 liters of paraffin. He sold the remainder of the paraffin for $1 per litre more than he paid for it. Write down an expression, in terms of x, for the sum of money he received.

c) He made a profit of $20.

I) Write down an equation, in x to represent this information, and show that it showes to

3x2 + 23x- 500 = 0 =

II) Solve the equation 3² + 23x - 500 = 0, giving both answers correct to one decimal place.

d) Find, correct to the nearest whole number, how many liters of paraffin he sold.

Gas mileage actually varies slightly with the driving speed of a car (as well as with highway vs. city driving). suppose your car averages 33 miles per gallon on the highway if your average speed is 54 miles per hour, and it averages 22 miles per gallon on the highway if your average speed is 75 miles per hour. answer parts (a) and (b) below. a. what is the driving time for a 2000-mile trip if you drive at an average speed of 54 miles per hour? what is the driving time at 75 miles per hour? the driving time at 54 miles per hour is nothing hours. (type an integer or decimal rounded to two decimal places as needed.) the driving time is at 75 miles per hour is nothing hours. (round to two decimal places as needed.) b. assume a gasoline price of $3.33 per gallon. what is the gasoline cost for a 2000-mile trip if you drive at an average speed of 54 miles per hour? what is the gasoline cost at 75 miles per hour? the gasoline cost at 54 miles per hour is $ nothing. (round to two decimal places as needed.) the gasoline cost at 75 miles per hour is $ nothing. (round to two decimal places as needed.)