Ali loaned Nizar $$50$ for a month. He charged $5\mathrm{.}3\%$ simple interest for the month. How much did Nizar have to pay Ali? Would it better for Nizar to ask for a compound interest instead of simple interest? Tip: use BOTH equations and tables

Jihad grandparents gave him $$2000$ for college to put in a savings account until he starts college in five years. His grandparents agreed with bank to pay him an additional $3\mathrm{.}5\%$ simple interest on the $$2000$ for every year. How much extra money will the bank give him at the end of the five years? Tip: use equations and tables

Mom of Sana suggested giving her $5500$ dollars after $10$ years or $2000$ dollars now. Sana' decided to take the money now and puts $2000$ dollars in the bank, which paid $1\mathrm{.}8\%$ interest compounded annually. Was she right in her decision?

Deema put $$3500$ in the bank at $4\mathrm{.}5\%$ interest compounded annually. How much will she earn after $7$ years? What would be the interest rate if she earns $$550$ at the end of the $7$ years?

A contracting company purchased a single$-$unit truck for $$13,500$ now. The cost of the truck is to be paid based on annual payments of $$3600$ per year for $8$ years starting $2$ years from now. Tip: use tables and draw cash flow.