Evaluate the following sums. show your work!
a. σ[infinity] i=0 1/4^i
b. σ[infinity] i=0 i/4^i
c. σ[infinity] i=0 i^2/4^i

5 x 14?

im new, sorry if this is wrong.

step-by-step explanation:

answer: i realy don't get it that much can you me figer it out pleas you

step-by-step explanation:

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%