svandewalle

03.12.2021 • 

Mathematics

Jada has a meal in a restaurant. She adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. When the check comes, it says they also need to pay $3.99 in sales tax. What percentage of the subtotal is the sales tax? After tax, the total is $45.99. What percentage of the subtotal is the total? They actually pay $52.99. The additional $7 is a tip for the server. What percentage of the subtotal is the tip?

Ответ:

kingb59

06.08.2022

Mathematics

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2. 4n + 8

Step-by-step explanation:

5n + 13 when n=−5

Lets plug in -5 for 'n'  in 5n+13

5(-5) + 13 = -25 + 13= -12

Now we check with each option and see whether we get same answer -12

Plug in n=-5 in each option

1)  2n + 2 =2(-5) + 2 = -10+2= -8

2) 4n + 8 = 4(-5) + 8 = -20 + 8 = -12

3) n² + 13 = (-5)^2 + 13 = 25 + 13 = 38

4) n + 8= -5 + 8 = 3

We got same answer -12 for option 2

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