The length of a rectangle is twice the width. The perimeter is 30 cm. What is the width of the rectangle? O A. 3.75 cm
B. 5 cm
C. 7.5 cm
OD. 10 cm
E. 15 cm

Find the solution of system of equation y= x-4 y=4x+2

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?