A square has a side length represented by the expression 3x + ½y. Which expression represents the perimeter of the square? A. 4(3x + ½y)

B. 2(3x) + ½y

C. 4(3x) + ½y

D. 2(3x + ½y)

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?