Natalie paid $20.7 for 3 small pizzas and a salad which was $3. Write an equation to represent the situation, then solve the equation to find the cost of one pizza. Show your work

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.