Tom wants to plant red flowers that cost $5 per plant and yellow flowers that cost $8 per plant. Write an algebraic expression to represent the total cost if Tom buys x red flowers and y yellow flowers. Write your answer in the form "ax + by" where a and b are positive or negative constants.

The academic affairs council is the highest expert body processing academic affairs, as stipulated by the university statutes. specialist aaro häkkinen (educational policy) took part in the council’s meeting. the agenda of the meeting included bachelors’ feedback, the timing of pedagogical studies, the grant system for tuition fees, the standardisation of administrative practices for internships and the situation of foreign-language and multilingual master’s programmes.