Select all the intervals where f(x)= −x^3 + 3x^2 + 1 is only decreasing:

2 < x < ∞

1 < x < 5

-∞ < x < ∞

0 < x < 2

-∞ < x < 1

-∞ < x < 0

5 < x < ∞

2 < x < ∞ is the only interval on which f(x) is only decreasing.

Step-by-step explanation:

The graph of f(x) shows that the only interval on which f(x) is increasing is on the interval (0, 2).

The only interval listed which contains no values between 0 and 2 is the interval 2 < x < ∞.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

answer:   x*94 +688*6   = 267*100

94x+4128=26700    

94x=22572     /94

x=240.128

step-by-step explanation: mark as brainlest reallly need it thx