investigate how temperature will affect the rate of reaction. You must describe how increasing/decreasing the temperature will cause an increase/decrease in the rate of reaction, and explain simply why it causes that increase/decrease in the rate of reaction

Can any one me with the answers to these questions asap?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?