Which two persuasive messages are examples of a request?

Please take part in the recycling workshop at your company this weekend.

We are delighted to offer a 10 percent discount on all purchases made on Sunday.

If our company buys from a single vendor, we can reduce paper costs.

We need your assistance in profiling the age groups in the district.

In the last billing cycle, I was surprised to find that there was no adjustment for the error.