Express in the form of P/Q
i) 0.675
= 675/1000
(ii) 0.32
= 32/100
a) The tangent to
at
has slope

and
at this point. It passes through the origin, so its equation is

It also passes through the point
on the curve, so

By substitution,

b) The normal to
at
has slope

It follows that

c) The tangent line equation is then

Do 12x-9 + 141 = 180 (add -9 and 4)
12x +132= 180 (Subtract 132 from 180)
12x =48 (Divide 48 by 12)
x=4
Answer:
7%, 0.28, 0.15, 13%, 21/100, 14/25
Step-by-step explanation:
Hope this is right :)