Question

1. model with mathematics tilda buys a shirt for d dollars. she uses a $50 gift card and receives the change shown. write an equation for this situation.
2. open ended write an equation that has a solution of 4. use the variable n and multiplication.

Explanation:

Step1: Define variables for problem 2

Let $c$ = received change (in dollars)

Step2: Set up equation for problem 2

The gift card amount minus shirt cost equals change:
$50 - d = c$

Step3: Create equation for problem 3

We need an equation with $n$, multiplication, solution $n=4$. Choose a coefficient, e.g., 2:
$2n = 8$
(Check: $n=\frac{8}{2}=4$, which matches the required solution)

Answer:

1. $50 - d = c$ (where $c$ is the amount of change received)
2. $2n = 8$ (other valid equations like $3n=12$ are also acceptable)