Which of the following can be used to evaluate the series 9 k=1 2(4) k=1?

Option (3)

Step-by-step explanation:

Given expression represents the sum of k terms of a geometric sequence.

Since, formula to calculate the sum of a geometric sequence is given by,

By this formula,sum of 9 terms of the given sequence will be,

Therefore, Option (3) will be the answer.

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17

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%