For the constant function V of X equals one which statement describes an additive in multiplicative inverses

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?