Marshal’s home emporium is having a sale on all sofas. all sofa’s are 25% off. if a sofa regularly sells for $895, what is its sale price?

$671.25

Step-by-step explanation:

In order to find the answer for this problem, it helps to know that 25% turns into 0.25. We are only looking for 75% of the price since it is 25% off.

895 x 0.25 = 223.75

Now we subract the discount form the original price to get the new one and you have your answer which will be..

895 - 223.75 = $671.25

Hope this helps!

Step-by-step explanation:

Given

Solving (a): T7

Substitute 7 for n in

Calculate S7 and S6

So:

Solving (b): Tn

Where

Calculate

We have:

Open brackets

So:

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