Barbara drives between Miami, Florida, and West Palm Beach, Florida. She drives 55 mi in clear weather and then encounters a thunderstorm for the last 70 mi. She drives 15 mph slower through the thunderstorm than she does in clear weather. If the total
time for the trip is 2.75 hr, determine her speed driving in nice weather and her speed driving in the thunderstorm.

step-by-step explanation:

i need to answer questions so i dont know but i think its the first one because it goes up but a consent rate

so, converting firstly the mixed fractions to improper fractions and then "adding".

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )