Plz with math
which expression is equivalent to −40+(−20)+(−60)?

a)−(40−20)+(−60)

b)40+20+60

c)−20+(−40)+(−60)

d)−40−(20−60)

Use the function nest to evaluate p(x) = 1 + x + · · · + x50 at x = 1.00001. (use the matlab ones command to save typing.) find the error of the computation by comparing with the equivalent expression q(x) = (x51 − 1)/(x − 1).

49xy +34y - 72z. determine the degree of the polynomial

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done