Question

Calculus help! *medal*

Answer 1

what's s' ?

Answer 2

s'(t)= t^2-15t+50 @IrishBoy123

Answer 3

so you want t when s' < 0....

i'd solve s' = 0 first

Answer 4

t = 5, 10 then. when setting equal to 0

Answer 5

well its \(+t^2\) so you know it has this shape, ie points downwards ....

Answer 6

sorry, yes, ai agree with your factorisation, i was focussing on next step.

make sense??

Answer 7

right yes

Answer 8

so that 's option c, ..... ??

Answer 9

How would It be c? I was thinking it was B.

Answer 10

So is B actually correct?

Answer 11

sorry

B

Answer 12

maybe, i need to go over to english section and re-learn alphabet ...... !!!

Answer 13

haha! okay awesome!