Will vote brainliest !

if a polynomial function has three x-axis crossings and one point where it touches the x-axis but does not cross it. which one of the following statements must be true of the function?
select one:
a. its degree is odd and at least 5.
d. it has no complex roots.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?