How many grams is there in 2/3 of a pound

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?

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9

These dots plots show the height (in feet) from a sample of the different types of elephants