List the customer number, customer name, and sales rep that have the same rep number as customer number 282. This will need to be a subquery and do not test for sales rep 35 explicitly. Let MySQL do the work for you. Insert your query and results here.
where rep.rep_num = customer.rep_num
and customer_num = 282)
You need to study about tables Join in MySql.
Your query doesn't need a subquery:
SELECT customer.customer_num, customer.customer_name, rep.first_name, rep.rep_num FROM rep JOIN customer ON rep.rep_num = customer.rep_num WHERE customer_num = 282;