Help taking timed test which ones all apply to problem

n = -1

n = 8

Step-by-step explanation:

3n^2=21n+24

0=-3n^2+21n+24

0=-3(n^2-7n-8)

0=-3(n+1)(n-8)

0=n+1

n=-1

0=n-8

n=8

N = 8 n N = -1

just substitute the values of n in the equation

GOOD LUCK FOR THE FUTURE! :)

whats the

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²