Find the surface area of a rectangular prism with a height of 6 inches, a width of 7 inches, and a length of 13 inches.
a) 338
b) 422
c) 520
d) 1364

Lilianna uses 3/4 calories per minute just by sitting. she uses 1 more calorie per minute by walking. lilianna uses a total of 12 1/4 calories walking to the park. lilianna uses the equation, d(.75+1)=12.25 to represent the situation. what does the variable d represent in the equation?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

The area of square garden is 300m squared. how long is the diagonal?