Find the volume of the rectangular prism. a) 29 cm3 b) 87 cm3 c) 288 cm3 d) 576 cm3

What expression is equivalent to 1/2(2+3x-6)

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

What is the value of x when x + 7 = 21?