One Step Equations
P - 3 = -4
p = 1
Solve AND graph
x + 7 > -2
x > -9
−2c + 6 = −8
c = 7
3x + 4 > 16
x > 4
Write the word sentence as an equation. Th en solve the equation.
5 more than a number x is −4.
5 + x = -4
x = -9
x + 12 = -10
-22
x - 12 < -10
x < 2
−3x − 4.6 = 5.9
x = -3.5
−2t − 5 < 9
t > -7
Write and solve an inequality that represents the additional numbers of people that can board the ship.
- A small cruise ship can hold up to 500 people. There are 115 crew members on board the ship.
x + 115 <= 500
x <= 385
-6x = -24
4
-14 > 2v
v < -7
3(w − 4) = −18
w = -2
z /-2 − 6 ≤ −2
x >= -8
Th e floor of a canyon has an elevation of −14.5 feet. Erosion causes the elevation to change by −1.5 feet per year. How many years will it take for the canyon floor to reach an elevation of −31 feet?
Write and solve the equation
-14.5 - 1.5x = -31
11 years
x/-5 = 20
-100
12 < x/-4
x < -48
w / 6 + 5 / 8 = − 1 3 / 8
w = -12
7(q + 2) < −77
q < -13
Your goal is to raise at least $50 in a charity fundraiser. You earn $3.50 for each candle sold. You also receive a $15 donation. Write and solve an inequality that represents the numbers of candles you must sell to reach your goal.
Write and solve an inequality that represents this problem.
10 candles