One-Step Equations
x+9=11
x=2
4z+8=40
z=8
a-3<8
a<11
5x-7>43
x>10
Four more than a number is more than 13. Solve.
inequality: n+4>13
solution: n>9
1=p-16
p=17
4h-6=22
h=7
h+4>4
h>0
73>18-11x
x<-5
The average growth of human hair is 0.5 inch per month. Find how long it takes a human to grow 3 inches of hair.
equation: 0.5m=3
solution: m=6
11r=-99
r=-9
2r-3.1=1.7
r=2.4
12n<54
n<4.5
x/5-2>1
x>15
Luis' cell phone plan costs $39 per month. Text messages cost an additional $0.15 each. If Luis' cell phone bill last month totaled $55.05, how many text messages did he send?
equation: 0.15t+39=55.05
solution: t=107
f/3=-12
f=-36
5+1/7b=-2
b=-49
-56<-8x
x>7
x/2+9>5
x>-8
Catie is starting a babysitting business. She spent $26 to make signs to advertise. She charges an initial fee of $5 and then $3 for each hour of service. How many hours will she need to babysit to make a profit?
equation: 5+3h>26
solution: h>7
x/2.5=-5
x=-12.5
(v+5)(-1/9)=6
v=-59
k/-2<9
x/14+6>9
x>42
A rental car company charges $45 plus $0.20 per mile to rent a car. Mr. Jones does not want to spend more than $100 for his rental. How many miles can he drive and not spend more than $100?
solution: m<275