Which expression represents that x was doubled and then decreased by 25%? A. 2x - 0.25x
B. 0.25x – 2x
C. 2(x - 0.25x)
D. 2x - (2x - 0.25x)

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Is the power produced directly proportional to the wind speed, give reasons for your answer?