R-FMA 110 e-Examination Semester 2 2021 2.2 A woman bought three chairs. The price of the first chair was R 661,60, the price of the second chair was R439.80 and the third chair price was R 490.30. If she paid with 20 R100 notes, what is the amount of change she will get? Remember to show all your steps. (3)

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)