30 points
can someone explain in detail how to solve the problem

We know that,

First term = a; T7 = a + 6d; T4 = a + 3d

According to question,

a + a + 6d = 40

Now,

(a)(a + 3d) = 160

Plug the value of (2) in (1), we get

So, AP => 8, 6, 4, 2, 0, - 2, - 4, - 6...

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%

40 i don’t know lololol