Which of the following rules should be use to find the area of a triangle? a) divide area by lengthb) divide the sum of the upper and lower sides by 2c) multiply length by width by heightd) multiply 1/2 base by altitudee) none of these

The area of a triangle is half the product of the base and the height.

Since multiplication is commutative, the following expressions are equivalent:

So, option D is correct

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3