PLS HELP FOR 30 POINTS
19x+1-4x-81

15x - 80 or 5(3x - 16)

Step-by-step explanation:

1. subtract the numbers

19x - 80 - 4x

2. combine like terms

15x - 80

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

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