2 Step Equation/Inequalities
-x + 7x = 24
x = 4
4/12 = 6/c
c = 18
From $75,000 to $85,000, find to the nearest percent
13% increase
Do the 3 lengths make a right triangle?
5, 12, 13
Yes,
52 +122 = 132
25 + 144 = 169
| n + 2 | = 4
n = 2 & n = -6
3 ( t + 5 ) = 9
t = -2
x/8 = (x-5)/6
x = 20
From 18oz to 12 oz, to the nearest percent
33% decrease
What is the length of the third side of the right triangle to the nearest tenth?
a = 4, b = 10
c = 10.8
4 | 2x + 5 | > 24
x > 1/2 & x < -11/2
3n + 5 > -1
n > -2
( d - 2 ) / ( d + 9 ) = 3/14
d = 5
From 56 in to 65 in, to the nearest percent
16% increase
What is the length of the third side of the right triangle to the nearest tenth?
a = 11, b = 14
c = 17.8
| 6 - b | = -1
No Solution
(-5/8)b < 25
b > -40
A 40:1 scale model of an airplane is being used to conduct wind-tunnel tests. If the model is 4.5 feet long, how long is the actual airplane?
180 ft long
A $1500 computer is on sale for $1275. What is the percent discount?
15% decrease
What is the length of the third side of the right triangle to the nearest tenth?
a = 9, c = 16
b = 13.2
Your test grade in science so far are 83 and 87. What possible grades can you make on your next test to have an average between 85 and 90, inclusive?
Between 85 and 100, inclusive.
Trenton sells electronic supplies. Each week he earns $210 plus a commission equal to 5% of his sales. This week his goal is to earn more than $800. Write and solve an equation to find the amount of sales he must have to reach his goal.
210 + 0.05s > 800
s > $11,800
A sailboat is traveling at a speed of 10 nautical miles per hour. If 1 nautical mile is 6076 ft, what is the speed of the sailboat in feet per second to the nearest tenth?
about 16.9ft/sec
The value of a stamp collection increase from $1600 to $1800, what is the percent change?
13% increase (12.5% increase)
A 20-ft ladder is placed 5 ft from the base of a building. How high on the building will the ladder reach to the nearest tenth?
about 19.4 ft
Solve and graph
4 + 3 | r + 2 | < 7
-3 < r < -1
(Graph)