How to Write the product of 3 and the square of a number increase by that number in algebraic expression

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases