Answer:
157.5 is the answer
Step-by-step explanation:
C) if you multiply it you get w^2 + 7w +11w+77, which is w^2+18w+77
The percentage of vehicles passing through this construction zone that are traveling at a speed of 50 and 57 miles per hour
Answer:
Option B. 
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form
is equal to
in this problem we have

so
substitute in the formula
Remember that

substitute
