What is the area of the shaded sector?
10units
20 units
40 units
80 units

Step-by-step explanation:

But i need a picture to be sure but at least i tried

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value