12. Mr. P drove 20 miles at a certain
speed to get to school. After work, he
drove 5 miles less but 10 miles faster to
get to a certain store (to get there before
the store closed) to buy some supplies.
Write an expression to model the
combined time Mr. P spent driving on the
two trips.

the probability is 0

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

what i would say the best answer is a. 40.5

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.