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@campbell_st plzz

@welshfella anything

please bro

just plug in x=5 and work it out as above

im confused

what exactly do i have to solve

do as I have done but replace the 3 by 5
f(5) = -(5)^2 etc

ughh

|dw:1437683865329:dw|

so its 5

No 5 replaces x in the formula then you work it out

5x-21

-(5)^2 + 5(5) + 4 = ?

you REPLACE the x in x^2 + 5x + 4 by 5

right

so now what

B?

average speed will be 6/2 = 3 feet per second

no

its falling and average speed is 3

So a

yea its got to be A

THX

yw