Which functions are one-to-one on the domain (−∞,∞)? A: μ(x)=x^6+2x^2/x+1

B: ψ(x)=sinx

C: g(x)=x^3 − 5

D: h(x)=x^5+x−2/x^4 + 1

E: f(x)=x^2 + 1

F: φ(x)=arctanx

Do u just plot the numbers on the graph like (1,

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

We just started the introduction into circles and i have no idea how to do this.