PLEASE HELP!! Given the vectors u, v, and w below, evaluate the following expressions:

u= <3,7> v=<4,-5> w=<-2,9>

Find -2.5w

A. <5, -22.5>

B. <-5, 22.5>

C. <5, 22.5>

D. <-5, -22.5>

Five dinosaurs go for a walk and come across some lovely chicken wings. their names are rexy, bronto, steggy, paly, and terry. there are exactly 5 dozen wings(equal enough for each dino to have a dozen right? ); however, terry is on a diet and he only eats 6 wings. if paly eats 2 more than terry, steggy eats 4 more than paly, and bronto and rexy eat the same amount because they are really hungry from not eating all day, how many chicken wings did each dino eat?

Choose a second initial value that is 0.01 greater than the initial value from question 9. iterate it using the function, f, ten times. if necessary, you can round your results to the nearest ten-thousandth.

Sketch one cycle if the cosine function y=2cos2theta