30 gallons x 3/5 = 18
If x = y, then you can subsitute x for y in the 2nd equation - so 4(x-x)+7 = 4(0)+7=7
There are 18 total pieces of candy and 3 lollipops. Therefore, the probability of picking one lollipop is 3/18 which simplifies to 1/6
Divide both sides by 0.05. Therefore, z= 1/0.05=20
250 miles/(50 miles per hour) = 5 hours
The toll of $4.25 includes $2 for the driver/car. So $2.25 ($4.25-$2) is left for the passengers. $2.25/0.75 = 3 passengers, so the total amount of people in the car is 1 driver and 3 passengers.
Use the FOIL method (First, Outside, Inside, Last) to solve. X2 +3x +5x + 3x5
Use the FOIL method (First, Outside, Inside, Last) to solve. X2 +4x +4x + 4x4
You need to apply the discounts successively not just add the discounts. So $125 x 80% = $100 (price after original 20% discount). $100 x 70% = $70 the price after the 2nd 30% discount.
