In the band there are twice as many tubas as french horns and three more trumpets than tubas. five times the number of trumpets equals nine times the number of french horns, plus triple the number of tubas. how many of each kind of instrument are there?

3 French horns

6 tubas

9 trumpets

Step-by-step explanation:

Let the number of French horns be x.

Number of French horns = x

There are twice as many tubas as French horns, so

Number of tubas = 2x

There are three more trumpets than tubas, so

Number of trumpets = 2x + 3

Five times the number of trumpets equals nine times the number of French horns, plus triple the number of tubas, so

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