Answer:
2r+1+(-4r)+7
= -2r+8
= -2(r+4)
Step-by-step explanation:
Answer:
63.6 liters
Step-by-step explanation:
1 gallon = 4 liters
15.9 gallons = ? liters
To find the number of liters, multiply 4 by 15.9.
15.9 gallons = 63.6 liters
If this anser is correct, please make me Brainliest!


the discriminant is a negative value, thus no solution for such quadratic, meaning if we use h=64.5 like we did, there's no "t" seconds at which point the ball hits the batting cage.