Basic factoring. Please help!

3rd Option: -1(x + 15)

Step-by-step explanation:

When we factor our a negative 1, we take the opposite signs of what is given:

-1(x + 15)

To check, we simply just redistribute to check if it matches the original expression:

-x - 15

So the 3rd option is the correct choice.

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

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: