Traveling at 45 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 240 miles from orlando to miami?

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?