So this means W(-3x) = 3x. So it's equal to 3(-3x), which simplifies to be -9x. Whenever you have a function, it looks like f(x). f doesn't have to be the letter, it can be a, b, c, or like in this case, W. It just means the output of what W(x) is if x equals the number in the parentheses, which is -3x in this case.
Multiply 3 by 4, which gets you 12 mph
Answer:
first find the area of the triangle
1/2 base x height
(1/2) 6 x 4 = (1/2) (24) = 12
area of rectangle
base x height
4 x 6 = 24
add them together
24 + 12 = 36
B) 36 inches
hope this helps :)
Step-by-step explanation:
