Sharon earned 6000 bonus miles for opening a new credit card that has a frequent-flyer program. She earns 250 miles for every $100 she spends. When the total miles reaches 25,000 miles, Sharon will be able to reserve a free round-trip ticket to anywhere in the United States. How many $100-purchases must she make to get the free trip?

She needs to make 76 $100 purchases.

Step-by-step explanation:

Let's represent this with an equation. We know she already has 6000 miles.

6000 +

She earns 250 per 100 spent dollars. Let's represent the amount of $100-purchases with x.

6000 + 250x

Her ultimate goal is to get 25,000 miles.

6000 + 250x = 25000

Now all we have to do is solve!

250x = 19000

x = 19000/250 = 76

She needs to make 76 $100 purchases.

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b