Acubic function generally has the form f(x) = ax3 + bx2 + cx + d. if we know that for some x-value x = p we have f(p) = 0, then it must be true that x − p is a factor of f(x). since we are told that f(5) = 0, we know that is a factor.

If f(5) = 0 we know that (x - 5) is a factor.

20%

Step-by-step explanation:

Two bags contain marbles, while Bag A contains 112 marbles, bag B contains 140 marbles.

Number of marbles in bag A = 112

Number of marbles in bag B = 140

Differences in the marbles

= 140-112= 28

Percent fewer marbles in Bag A than Bag B will be:

Difference in marbles in the bags divided by the marbles in bag B multiplied by 100.

= 28/140 × 100

= 1/5 × 100

= 20%