If todd spent 4.5 hours studying last week, how many minutes did he spend studying? A.540 mins
B. 270 mins
C.240 mine
D.64.5 mins

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2