E) a department store has marked down its merchandise by 25%. it later decreases by $5 the price of items that have not sold. a) write a function f (x) to represent the price after the 25% markdown. b) write a function g(x) to represent the price after the $5 markdown. c) use a composition function to find the price of a $125 item after both price adjustments. d) does the order in which the adjustments are applied make a difference? explain.

sec ф = 5/3 (quadrant 4)

let x = base

y = perp

z = hypotenuse

sec ф = hypotenuse/base = 5/3

⇒ z = 5 and x = 3

finding y:

z² = x² + y²

5² = 3² + y²

y² = 25-9

y² = 16

y = 4

now finding all other geometric functions of theta:

sin ф = y/z = 4/5

sin ф = -4/5 (sin is negative in the 4th quadrant)

cos ф = x/z = 3/5

cos ф = 3/5 (cos is positive in 4th quadrant)

tan ф = y/x = 4/3

tan ф = -4/3 (tan is negative in 4th quadrant)

cosec ф = z/y = 5/4

cosec ф = -5/4 (cosec is negative in the 4th quadrant)

cot ф = x/y = 3/4

tan ф = -3/4 (tan is negative in 4th quadrant)

i used to know how to do this in 7th but i forget easily

step-by-step explanation: