two- step equations
2a+10=16
a=3
2x+3x-10=5
x=5
5n+9=2n+12
n=1
3x+2-x+4
2x+6
What expression could represent the perimeter of a rectangle with a length of (20x+8) and a width of (2x)
44x+16
3-10b=23
b=-2
x-3x+1+5=8
x=-1
8y-3=6y+17
y=10
-3x+4y-2y+5x-10
2x+2y-10
On a beach trip,Lucy rents a bike from Wheels by the Waves where they rent bikes for $12 plus $3 per hour. If lucy spent $30, how many hours (h) did she rent a bike
6 hours
-(1/2)x+4=8
x=-8
4x+2-7x-10=4
x=-4
6x+5-2x=3x+26
x=21
3d+18=18-3d
d=0
James bought a cheeseburger, fries and a drink for dinner. The cheeseburger was three times the price of the fries and the drink and the fries were the same price. If the entire meal cost $12.50, what was the price of the cheeseburger?
$7.50
10-(4/3)=2
t=6
(3/4)x-5-(1/2)x=3
x=32
3x-4+2x+2=3x+1
x=3/2
10xy-x+7y+3x-12y
10xy+2x-5y
While at the beach, Daniel buys lunch for his family from a food stand. He purchase one hot dog for $2.50 a 3 hamburgers. If he spent $13 total, write and solve and equation to find h , the amount each hamburger cost.
h= $3.50
7x+19=21
x=2/7
3x+8-2x+x-18=10
x=10
(1/2)x+3=5-(3/2)x
x=1
6xy+2xz-4xy+5x-7xz
2xy-5xz+5x
The water temperature at the beach started at 82 degrees. and it is rising 0.6 degrees each hour. If the water temperature is now 85 degrees, write and solve an equation to find h, the number of hours that have passed
5 hours