11. line n passes through points (7,12) and (4, 15). what is the slope of a line that
is perpendicular to line n?

It is 1.

Step-by-step explanation:

The slope of line n  = rise / run

= (15 - 12) / (4 - 7)

= 3 / -3.

So the slope m = -1.

So the slope of the line perpendicular to n is  -1 /m = -1 / -1  = 1.

x/3-10=8

x/3=18

x=48

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt