Let $f(x)$ be a quartic polynomial with integer coefficients and four integer roots. suppose the constant term of $f(x)$ is $6$.(a) is it possible for $x=3$ to be a root of $f(x)$? (b) is it possible for $x=3$ to be a double root of $f(x)$? 2

By the rational root theorem, the answer to (a) is yes, and the answer to (b) is no. This is because 3 divides 6, but 3^2 = 9 does not divide 6.

∠cbe and ∠deb are same-side interior angles.

i took the test

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.