CAN SOMEBODY PLZ ANSWER ALL THESE CORRECT THANKS (Only if u know how to do this)

WILL MARK BRAINLIEST :D

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)- 144x+360 what am i doing wrong?

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

Put the following steps for calculating net worth in the correct order