Question

Write a function rule for the area A of a triangle whose base, b, is 2 cm less than seven times the height, h. What is the area of the triangle when the height is 14 cm?

Answer 1

let the height be h...

and then the base is 7h - 2

Answer 2

what would this equal out to be

Answer 3

so the area is

A = 1/2 b x h

using the information above it can be written as

A = 1/2 x (7h - 2) x h

now just substitute h = 14 and evaluate