Aproblem states that ursula earns $9 per hour. to write an expression that tells how much money ursula earns for h hours, joshua wrote 9/h sara wrote 9h. whose expressions is crrect and whu

Here, h represents the hours.

As per the statement:

Ursula earns $9 per hour.

In 1 hour Ursula earns = $9

then;

in h hours Ursula earn  = 9h

Therefore, an expression which tells that 9h money Ursula earns for h hours.

Sarah expression 9h is correct.

Because it tells how much money she earns each hours.

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation: