1+1 pls, help, I will give you brainliest answer

Measure of angles 31 (x+4) (3x+9) me

Yvaries directly as x. y =90 when x=6. find y when x=13

Ze trinomial x2 + bx – c has factors of (x + m)(x – n), where m, n, and b are positive. what is ze relationship between the values of m and n? explain how you got ze answer