How do i solve integers

If f(x)=2x^6+x^2+2 then what is the remainder when f(x)is divided by x+2

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.