Paula invests £4500 in a savings account
that pays n% simple interest per annum.
At the end of six years their is £5025 in
the account.
Find the value of n

18.61

Step-by-step explanation:

Principle = £4500

Time = 6yrs

Rate = n%

Simple interest = £5025

n = ?

We know,

SI =PTR/100

£5025 = £4500*6*n/100

£502500 = £27000*n

n = 18.61

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)

they aren't great and cause destruction, idk man