Lesson 4-1 & 4-2
z+3/2=1/2
z=-1
-3x+5=2
x=1
is -2 a solution to the inequality below?
-5.5y<14
Yes
11<14
Solve and graph.
x/5<=-3
Graph.
x<=-15
Solve and graph.
4-3x>=19
Graph.
d<=-5
n/1.6=5
n=8
x/8-1/2=-7/2
x=-24
x-4.7>=-1.6
z>=3.1
Solve and Graph.
6x> -18
Graph
x> -3
Solve and Graph.
5x-4>=11
Graph.
x>=3
-6=3/2z
z=-4
3y-8y=25
y=-5
Solve and Graph
p+1/4>=2
Graph
p>=1 3/4
Solve and Graph.
-3/2n<=6
Graph
n>=-4
Solve and Graph.
b/-3+4<13
Graph.
b> -27
The temperature at midnight is 56 degrees. The temperature decreases 4.5 degrees each hour. When will the temperature reach 32 degrees?
5:20 a.m.
-6=1/4w-1/2w
w=24
A rock climber's sleeping bag is recommended for temperatures no less than -15 degrees. Write and graph an inequality that represents the recommended temperatures for the sleeping bag.
t>=-15
graph
Solve and graph.
k/-0.25<=36
Graph.
k>= -9
Solve and graph.
-7(x+3)<=28
Graph.
x>=-7
You and a friend are playing a video game. after Level 4, your friend's score of -8 is 33 points less than your score. Find your score after Level 4.
-8=s-33
s=25
You install 500 feet of fence along the perimeter of a rectangular yard. The width of the yard is 100 feet. What is the length of the yard?
150 ft
To become an astronaut, a person can be no taller than 6.25 feet. Your friend is 5 ft 9 in tall. How much can your friend grow and still meet the requirement?
h<=0.5 ft
h<=6
A submersible descend 37.5 meters per minute from sea level to explore a recent shipwreck. The shipwreck rests on the ocean floor at an elevation deeper than -3,810 meters, the elevation of the Titanic shipwreck. How long does it take the submersible to reach the shipwreck?
t>101.6
A cave explorer is at an elevation of -38 ft. The explorer starts moving at a rate of -12 feet per minute. Write and solve an inequality that represents how long it will take the explorer to reach an elevation deeper than -200 feet.
-12x-38< -200
x>13.5 min