Triangle QRS is a right triangle. Angle Q is the right angle, m∠R=(2x+5)∘ , and m∠S=(5x−6)∘ . What is m∠R ?

Anyone know? will mark brainliest if correct!

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation