Find f'(-2) if f(x) = x^4/5 - 7x. f'(-2) = ?
(Simplify your answer. Type an integer or a fraction.)

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Eric and shiloh each have a savings account. the ratio of eric’s account balance to shiloh’s account balance is 4: 3. together they have a total of $140 in their accounts. use the tape diagram below to you determine the balance of eric’s account.

Type the correct answer in the box. use numerals instead of words. if necessary use / for the fraction bar.