FIRST: For the first one you multiply the amount of product by its price. There is a single pack of gum for $3.20. 5 bars 1.25$ each so 5*1.25 is 6.25.And 2 lbs of apples for 0.88$ a pound so you multiply that by two and get $1.76. Then you add these all together and get $10.33 as your first answer
SECOND: The starting temperature is 20 and drops by 5.3 degrees 5 times. So, you can subtract 5.3 5 times OR multiply 5.3*5. I multiplied to get 26.5, meaning the temperature decreased 26.5 degrees from the original. Next you subtract the change from the original temp, 20-26.5= -6.5 so the current temperature is -6.5 degrees.