Question 11 (Mandatory) (1 point) The Quicks are driving to their vacation home. After driving for 3.25 hours, they are
250 krn from the vacation home. Then, after 4,75 hours of dúving, they are 150 km
from the vacation home. Approximately, how fast are the Quicks driving?
a) 83 km/hr
b) 67 km/hr
c) 60 km/hr
d) 75 km/hr
Question 12 Mandator 61 point

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is