Sharon and Dave were tallying the number of shooting stars they observed one night. By 10:00 pm they had counted 12 shooting stars. By 1:00 am, they had counted 24. Write a linear equation to model the number of shooting stars (y) according to the number of hours (x). (Let 10:00 pm be represented by x=0)

Adaylily farm sells a portion of their daylilies and allows a portion to grow and divide. the recursive formula an=1.5(an-1)-100 represents the number of daylilies, a, after n years. after the fifth year, the farmers estimate they have 2225 daylilies. how many daylilies were on the farm after the first year?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Find the cosine function that is represented in the graph.