Algebra 2 ; question in the attached

has 5 real and 0 non-real zeroes.

Step-by-step explanation:

Here, the given polynomial is

Now, by FUNDAMENTAL THEOREM OF ALGEBRA:

A polynomial of  degree n can have at most n roots.

So, here the number of roots f(x) can have = 5

Now, examine the change in the sign of f(x) and f(-x)

Signs of f(x) is  + - -.

So for f(x)  the sign changes only once.

Now,  

or,  

Here, signs are - - -

So,for f(-x)   the SIGNS DO NOT CHANGE.

So it has no negative real zero.

Hence, has 5 real and 0 non-real zeroes.

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

step-by-step explanation:

deez nut