The perimeter of an equilateral triangle is 15x+30 units. which expression can be used to show the side length of one side of the equilateral triangle? a) 15(x+2): each side length is x+2 units. b) 30(1/2x+1): each side length is 1/2x+1 units c) 5(3x+6): each side length is 3x+10 units d) 3(5x+10): each side length is 5x+10 units

d) the triangle is a right triangle 60 squared +144 squared= 156 squared

step-by-step explanation:

156 squared is the hypothenuse

so 156= c

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