Question

Perform (f•g)(x) where f(x)= √x and g(x)=x²-1 then find its domain

Answer 1

Answer:

Let the cost of pencil be x dollars

As per statement, the pen costs a dollar more than the pencil.

Pen cost= x + 1 dollars

A pen and a pencil cost $1.10

x + x + 1 = 1.10

2x + 1 = 1.10

2x = 1.10 - 1

2x = 0.10

x = 0.10/2

x = 0.05

Thus the cost of pencil is $0.05

The cost of pen x + 1 = 0.05 + 1 = $1.05

Answer the cost of pencil is $0.05