In #3 and #4 explain what each equation represents. Include justification (you do not need to solve): Let Q = number of quarters Mrs. Brooks has Let P = number of pennies Mrs. Brooks has 0.25Q+0.01P=1.38

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

Asphere has a diameter of 10 in. what is the volume of the sphere?

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?