Abe tested 85 Brand X light bulbs to determine their life spans. The histogram below shows the results of his test. Approximately what percent of Brand X light bulbs had life spans greater than or equal to 1000 hours?

A-25%

B-66%

C-85%

D-60%

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

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left

Which value of y will make the inequality y< -1 false?