Write cos 110° cos 25°- sin 110° sin 25° as a cosine of a single angle

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Two lines parallel to the same plane are parallel to eachother

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points