Find |4 + 3i| show all your work. . . "i" is imaginary number

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40