Question 151547
Let x = the number of books to be sold at $1.15 per copy.
Now the problem says "...the author wants to earn at least $46,000" So this means that you need to write an inequality rather than an equation.
In writing inequalities, "a is at least = to b" is expressed as {{{a>=b}}} (a is greater than or equal to b), so you would write:
{{{(1.15)x >= 46000}}} Now you can solve inequalitites much like you would solve equations.
{{{(1.15)x >= 46000}}} Divide both sides by 1.15
{{{x>=40000}}}
So the author must sell at least 40,000 copies to earn at least $46,000