Calculate the average atomic mass of gold is 50% is gold 197 and 50% is gold 198

Which graph represents the parent function of y=(x+2)(x-2)

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.