(3x2 + 12 – 4x) + (9x2 – 3x + 5)
by step pls

Acircle has a circumference of 28.36 units what is the diameter of the circle

The function show two sisters' savings account and the rate at which they plan to deposit money

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft