Answer:
17
Step-by-step explanation:
To find the number of meals Harper has bought when her parents receive the email, we can set up an equation.
Let m be the number of meals Harper has bought.
Each meal costs $3.25, so the total cost of m meals is 3.25m.
Harper's parents receive the email when the balance reaches $19.75. This means that the remaining amount in Harper's account after buying m meals is $19.75.
We can set up the equation:
$75 - 3.25m = $19.75
To solve for m, we need to isolate the variable m.
First, let's subtract $19.75 from both sides of the equation:
$75 - $19.75 - 3.25m = $19.75 - $19.75
$55.25 - 3.25m = 0
Next, let's subtract $55.25 from both sides of the equation:
$55.25 - $55.25 - 3.25m = $0 - $55.25
-3.25m = -$55.25
To solve for m, we need to divide both sides of the equation by -3.25:
(-3.25m) / -3.25 = (-$55.25) / -3.25
m = 17
Therefore, when Harper's parents receive the email, Harper has bought 17 meals.
