Round your answer to the nearest hundredth. (GUYS PLS ANSWER FAST) it’s due in half an hour ;-;

3.19

Step-by-step explanation:

you just treat all 25 like they all had 3 siblings (i can't explain it with text but the logic works out i promise). you would do [(25 x 3) + 8]/26 which equals about 3.19

2r^2+6r-15=0

cannot be factored so use quadratic formula

(-6+- √156)/4     Plug in a use a calculator

(-3±√39)/2      simplify the radical and rationalize the fraction