Proportions
x/4 = 5/2
x = 10
Solve for r
d = rt
r = d/t
Chris has 20 cookies (don't ask me how, I guess he just found them or something). He decided to give them to 5 friends. How many cookies does each friend get?
4 cookies
2 (n + 3)
2n + 6
10x - 3x
7x
(x + 2)/3 = 7/3
x = 5
Solve for r
I = prt
r = I/pt
The length of a table is 36", and the width of the table is 27". What is the PERIMETER of the table?
126"
-9 (h + 2)
-9h -18
4x - 5x
-x or -1x
(x - 5)/6 = (x-2)/7
x = 23
Solve for x
u = - k + x
x = u + k
The length of a table is 36", and the width of the table is 27". What is the AREA of the table?
972"
- ( p - 4)
-p + 4
2x + 12x - 10x
4x
(2x-2)/5 = (x+3)/2
x = -19
Solve for x
y = mx + b
x = y - b/m
The height of Ironwood High School is 3 times the height of Ms. McPherson's car, plus 10". How tall is Ironwood if Ms. McPherson's car is 70"?
220"
-8 ( h + 42)
-8h - 336
8x + 9x - 10
17x - 10
(0.6m - 3)/8 = (0.5m + 1)/5
m = -23
Solve for y
ax + by = c
y = c - ax/b
The rate to rent a moving van is $30 per day, plus $0.50 per mile. Ms. McPherson rented a van to drive far away from her Algebra 1 class, and it took two days. The van cost $360 total. How many miles did she drive?
She drove 600 miles. That's a long way away... On second thought, maybe she should just stay. Also, $360 is expensive...
- (14 + 15) - (b - 7)
-b - 22
18 - 5x + (-4) -7x
-12x + 14