Answer:
-x^2-15xy-50y^2+14y
Step-by-step explanation:
Your tip total will be $5.30 and your bill total will be $31.80 after tip.
Answer:
2
Step-by-step explanation:
625282629283637hshshs
H(t) = 0 for t = 7 and for t = -2.
It is reasonable for the time to be positive, 7 seconds.
(The offered answers all appear to be negative, so none are reasonable.)