What is the value of x3 + 3.4y when x = 3 and y = 4?

Can some one explain this i got sent this. is this a threat i’m scared

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y