During a trip, a driver travelled a distance of 80km at an average speed of 60km/hr. He then changed his speed and travelled the remaining 20km of his journey at 30km/hr. What was the drivers average speed for the entire journey? Show all working!!​

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Are the corresponding angles congruent? explain why or why not.

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!