Jamie is painting a toybox shaped like a rectangular prism with dimensions 3 feet by 2 feet by 1 foot. If she is planning to paint all sides of the box, what is the surface area that she must cover?
A) 6 ft2
B) 15 ft2
C) 22 ft2
D) 30 ft2
Simplify.
7x + 3(x - 2) - 4x + 8
A) 6x + 2
B) 6x + 14
C) 6x - 2
D) 14x + 2
Which property explains why these two expressions are equal?
7 + q + 4 = 4 + 7 + q
A) associative
B) commutative
C) distributive
D) inverse
Trina's teacher asked her to explain the division problem 48 รท 12. Which choice gives the correct explanation?
A) Break 4 into 12 groups of 48.
B) Break 48 into 12 groups of 4.
C) Break 12 into 4 groups of 48.
D) None of these.