Royce has $15 with him and spends $12 to buy his favorite comics. he has $3 left, which he deposits in the bank. which number will be entered in royce's bank account statement? is it negative or positive

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

In a column proof the right column states your reasons

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?