Can someone help with this question

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

Suppose that f(0) = −3 and f '(x) ≤ 8 for all values of x. how large can f(4) possibly be? solution we are given that f is differentiable (and therefore continuous) everywhere. in particular, we can apply the mean value theorem on the interval [0, 4] . there exists a number c such that

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?