You have a coupon for 30% off your dinner. Your total bill was $50. You also need to pay a 7% sales tax and leave a 22% tip. With the discount, tip + tax included, how much was your dinner? (It's not 49.50!!! If you get it right, I will give brainliest)

The cost of the dinner is $45.15.

Given

You have a coupon for 30% off your dinner.

Your total bill was $50.

You also need to pay a 7% sales tax and leave a 22% tip.

After a 30% discount the cost of the bill is;

The remaining bill is 50 - 15 = $35.

After the discount adds 7% sales tax.

The bill after sales tax is = 35 + 2.45 = $37.45.

With the discount, tip + tax included, adding 22% tip is;

Therefore,

The cost of dinner is

$35 + $2.45 + $7.7 = $45.15

Hence, the cost of the dinner is $45.15.

To know more about Equation click the link given below.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.