Question

I

Justin wants to buy his mother a
: charm bracelet as a birthday gift. The
charm bracelet costs $50, plus $20 for
I each charm. The equation
- 20x + y = 50 represents the
cost y of the bracelet, where x is the
number of charms. Graph the
equation. How much will Justin have
to pay for a bracelet with 5 charms?

Answer 1

For a bracelet with 5 charms, Justin will have to pay $150.

From the question, the equation is: -20x + y = 50.

To graph it, let's rearrange it to the slope-intercept form: y = 20x + 50. The y-intercept is 50, so the graph crosses the y-axis at the point (0, 50), and the slope is 20, meaning for every unit increase in x, y increases by 20.

We then want to find the cost of a bracelet with 5 charms (x = 5), substitute x = 5 into the equation:

y = 20 * 5 + 50

y = 100 + 50

y = 150

So, for a bracelet with 5 charms, Justin will have to pay $150.