First three hours = 85 * 3 = 255
last two hours = (85/2) * 2 = 85
total cost = 340
For this, we are just going to plug in -9 for every x and then solve the equation:
Now we know that q(-9) is equal to 566.
Answer:
1300
Step-by-step explanation:
Let the amount put in the station's tank = x
4(400 + x) = 8100 - x Remove the brackets
1600 + 4x = 8100 - x Subtract 1600 from both sides
1600 - 1600 + 4x = 8100 - 1600 - x Do the subtraction
4x = 6500 - x Add x to both sides
4x + x = 6500 - x + x
5x = 6500 Divide by 5
5x/5 = 6500/5
x = 1300
1300 gallons were added to the station's tank.
Answer:
18
Step-by-step explanation:
16 × 9 = 8 × x
x = 18
