If f(x) = [ex + ln(x)]-13, what is f '(x)?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

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