Pls help :( it’s a riddle and idk the answer, Why was the parabola feeling down today?

Which expressions are equivalent to -6 + 3m

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza