Convert to a product: cos(2α− pi/16 )+ cos( 9π/16 −2α) im able to get to 2cos(pi/4)*cos(4a-10pi/16) but i dont know how to simplify it even mor

What is the slope of the equation y =

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form