How many different selections of 4 books can be made from a bookcase displaying 12 books?

At his new job, jeremiah can choose an hourly rate of $9 plus a $50 weekly bonus for opening the store, or an hourly rate of $10 per hour with no opening bonus. the equations model his salary options. y = 9x + 50 y = 10x

Which of the following graphs represents the function f(x) = 2^x

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab