Which equality represents a proportional relationship?
a)
−2.8
−2
=
4.2
3
b)
2.6
1.3
=
4.2
2
c)
2
5
=
8
9
d)
3
4
=
7
12

A. Is the answer

Step-by-step explanation:

a)-2.8/-2 = 4.2/3 is the answers in usa prep test

Step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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