third inequality has dashed boundary.
an equality has dashed boundary on graphing when it strictly less than or strictly greater than symbolically ( < or > sign in the inequality)
boundary line is is solid line when the inequality is with symbol of equality also ( < = or > = )
here we can see that all the inequalities except third one has symbol less than or equal to or greater than or equal to . and third inequality is with
symbol > (greater than ) that mean strictly less than ,therefore on graphing
third inequality gives dashed line boundary.
7x(x - 2y)(x + 2y).
first take out the gcf which is 7x:
= 7x(x^2- 4y^2)
now factor the expression in the brackets:
= 7x(x - 2y)(x + 2y) (answer).
0.1 * x < = 5
x < = 50
the maximum number of letters he can have engraved is 50.