Help!! If you don't understand what to do here are the directions:

Find the products/answers to each equation then, I have to highlight the ones that are equivalent.
I'll include a example:

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60