The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?

which car traveled a greater distance? Car A traveled 25 miles/hour for 3 hours, stopped for an hour, and then traveled 35 miles/hour for 4 hours. Car B traveled an average speed of 43 miles/hour for 5 hours. Explain your answer.

The junior boys' Sunday school class save $2.95 in quarters and dimes. They received five more dimes than quarters. How many of each coin did they receive?

Find the solution to the following system using substitution or elimination y=2x+6 y=-3x+11 A. (1,8) B. (17/5,4/5) C. (-7,-8) D. (-1,4)

Which multiplication property is shown in the equation 3.1x (2x9) = (3.1x2) x9

Caroline usually only misses About 10% of her free throws if she misses fewer than two of her next for free throws then she will hold the record for free throws To estimate the probability of this happening Caroline uses a computer to randomly

What is polynomial 10x3 + 35x2 - 4x - 14 is factored by grouping.

Danny gets paid $8 per hour. What is the rate of change? A) m=4 B) m = 1/2 C) m=8

Two equivalent expressions the are equal to (9-c) + (9-c) + (9-c) + (9-c) is

If two angles in a triangle add up to138, then what is the size of the third angle

Kay has an 80% probability of making a free throw in basketball and each free-throw is independent. Kay gets to take two free throws and must make both to win the game. What is the probability that Kay's team will win the game?