Which value of x makes the equation cos(2x+9)° = sin(3x+6)° true? A. -12 B. 3 C. 15 or D. 33

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.