Answer:
(1) [tex]159+13n=250[/tex]
(2) [tex]n=7[/tex]
Step-by-step explanation:
(1) Make an equation where the total amount of money you have ($159) is added to the cost of an item ($13) multiplied by the unknown number of items (n). Set this equal to the amount you need ($250):
[tex]159+13n=250[/tex]
(2) Solve for n. Use inverse operations to isolate the variable. Subtract 159 from both sides of the equation:
[tex]159-159+13n=250-159\\\\13n=91[/tex]
Now divide both sides by 13 to isolate the variable, n:
[tex]\frac{13n}{13}=\frac{91}{13}\\\\ n=7[/tex]
The number of items you need to sell if:
You need a total of $250
And you have $159
Is 7.
:Done
Answer:
250 = 159 + 13n
n = 7
Step-by-step explanation:
the equation is 250 = 159 +13n because the total cost is 250 and you have 159 dollars already you just need to sell n amount of items for 13 dollars
how to get n:
250 = 159 + 13n
250 - 159 = 91 (what you need to earn)
91 ÷ 13 = 7 (what you need to earn divided by how much money each item costs)
n=7 (how many items you need to sell)
