Lianna saves $25 every month in her savings account. She took out $100 on time to go shopping. She now has $450 in her account. Write and solve an equation to determine how many months Lianna has been saving money.
25m - 100 = 450; m= 22 months
-5(m - 5) = -40
m = 13
3x -4 = -16
x = -4
-5y + (-4) = 26
y= -6
4x - 3 = -11
x= -2
1/3 m - 5 = -6
m= -3
-2(x - 5) = -16
x = 13
-6y + 12 = -66
y=13
9 = -3y + 12
y = 1
A waiter earned $3 an hour and $45 in tips. The total amount he made was $60. Write and solve an equation to determine how many hours he worked.
3h + 45 = 60; He worked 5 hours.
d/4 - 7 = -8
d= -4
3 + d/2 = 14
d= 22
1/2 (12x + 14) = 25
x = 3
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