0=40-10t-5t^2
t^2+2t-8=0
(t+4)(t-2)=0
t=-4 (not a solution) or t=2
Answer: after 2 seconds
Answer:

Step-by-step explanation:
Insert the given x values for the given equation to find the corresponding y coordinate:


Insert -6:

Simplify multiplication (when multiplying a negative and a positive, the result will always be negative):

Simplify (when subtracting from a negative number, add the values, but keep the negative symbol):

Insert -1:

Insert 1:

:Done
False, there isn't enough rice in 5.25 pounds.
Answer:
Phone B
Step-by-step explanation:
It is around the same cost as Phone C, but has unlimited data (which means unlimited gigs)
Answer:
im just saying this is supposed to help you, this is just flat out cheating, but its d
Step-by-step explanation: