Duru has an ice-cream stand, which she opens on days that are forecasted to be warmer than 10°C. When open for business, her daily profit, P, is a function of the number of cones she sells, n, and can be
modeled by the function P(n) = 2n - 20. Additionally, she finds that the number of cones she sells, C.
is a function of the average temperature, t, in degrees Celsius (°C), and can be modeled by the function
C(t) = 50 + 10(t – 10).
Find an explicit expression that gives Duru's profit on a day with an average temperature of t° C.

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.