Which mathematical expression is equivalent to the number sentence below?

add 18 to 24, and then multiply by 6

a
24 + 18 x 6

b
24 + (18 x 6)

c
18 + ( 24 x 6)

d
(24 + 18) x 6

This is about circle theorems. someone asap : (

How is the interquartile range calculated?

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?