Will give brainliest, Please explain how you got your answer. I need this by today plz.

For the second part which includes the equation 3x - 15, the answer for 1 would be -12. 3(1)-15. You substitute 1 for x, and then subtract that by 15. You're left with -12. For the second and third one it is the same, but for the sake of answers, here you go. 2 = -9. 3 = -6.

For the first row which is a tad harder, this is how you do it.

Substitute the x in the parenthesis with each of the x values, but this time you wanna do the Parenthesis content first as in PEMDAS parentheses comes first. 3(1-5). 3(-4) = -12. For answer's sake, here you go.

3(2-5)=3(-3). -9 is the answer. 3 is -6.

~CodexTheDuplex

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.