Can yall help me solve this (x + 8)° + 4x° the subject is actually geometry

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase