math exercise please help?

MOISI

New member
let f(t) = -5t^2 +126t+106.2
a) find and simplify an expression for {f(t+h)-f(t)} / h , assuming h is not equal to 0
b)let g(t)= |3t-5|
find and simplify and expression for {g(2+h)-g(2)} / h assuming h>0
 
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