Math
Solving One-Step Equations
Solving One-Step Equations
-4.5 = m + 1.9
m = -6.4
5p + 2 = -10
p = -2.4 OR -2 2/5
Write the word sentence as an inequality. Do not solve.
A number x is less than 1/4
x < 1/4
Write the word sentence as an inequality. Do not solve.
The product of a number z and 4 minus 3 is no less than -1.
4z - 3 >= -1
What is a living part of an ecosystem called?
A biotic factor
g - 16 = -52
g = -36
4y - 16.3 = -11
y = 1.325
Write the word sentence as an inequality. Do not solve.
A number a divided by 2 is no more than 6.
a/2 <= 6
Write the word sentence as an inequality. Do not solve.
Adding 6 to a number b divided by -5 is greater than 12
b/-5 + 6 > 12
What nonliving resource do plants need from the sun to grow?
Energy (sunlight)
Create the correct equation, then solve for x.
27 is 12 more than a number x.
27 = x + 12; x = 15
-3(t - 6) = 9
t = 3
Solve the inequality, then graph on a number line.
p/-3 > -5
p = 15
Solve the inequality, then graph on a number line.
6 < 2g - 4
5 < g
What is a group of the same species living in one area called?
A population
Find the value of 3x + 2 when 7 + x = 5
x = -2; -4
The cable company charges a monthly fee of $45. Each movie rental is $1.99. You owe $68.88. How many movies did you rent?
1.99m + 45 = 68.88; m = 12
Solve the inequality, then graph ion a number line.
-3 >= x - 4.5
1.5 >= x
Solve the inequality, then graph on a number line.
3t - 1 < 8
t < 3
Why might a population decrease after growing very large?
Resources become limited
You earn $9 per hour babysitting. This is $2 more than what you earned per hour last year. What did you earn per hour last year?
h + 2 = 9, h = 7
Kayla’s age is 3 less than twice her brother’s age. Kayla is 13 years old. How old is her brother?
2b - 3 = 13; b = 8
A video game gives you 100 seconds to complete the level and move to the next. You are halfway through the level after 55 seconds. Write and solve an inequality to find out how much time you have left to complete the level. Then graph on a number line.
t + 55 <= 100
t <= 45
A music teacher budgets $150 for new books. The minimum cost of a new book is $12. How many books can she buy?
12x <= 150
x <= 12
What is the largest level of organization discussed in the lesson?
An ecosystem