Applications
Solving I
Solving II
Solving III
Solving IV
100

Solve d=rt for t

t= d/r

100
Solve m - n = 5 for m
m = 5 + n
100
Solve m/k = x for k
k = m/x
100
Solve 5 - b = 2t for t
t = 5-b 2
100
Solve D = m/V for V
V = m/D
200

Solve C = 2*pi*r  for r.

r=C/2*pi
200
Solve x/5 - g = a for x
x = 5(a + g)
200
Solve y = mx + b for x
x = y - b m
200
Solve PV = nRT for T
T = PV nR
200
Solve M = T - R for T
T = M + R
300

The formula A=P+I shows that the total amount of money A received from an investment equals the principal P (the original amount of money invested) plus the interest I. Solve this formula for I.

I = A - P

300
Solve 2a + 2b = c for b
b = c - 2a 2
300
Solve ax + r = 7 for r
r = 7 - ax
300
Solve 4y + 3x = 5 for x
x = 5 - 4y 3
300
Solve 9 + 3x = 2y for x
x = 2/3y - 3
400
The formula C = 2*pi*r relates the circumference C of a circle to its radius r. Solve for r and then evaluate for a circle with a circumference of 15 inches. What is the radius?
r = C/(2*pi) r = 7.5/pi m
400

Solve 3.3x + r = 23.1 for x

x = 23.1 - r /3.3

400

Solve 25a - 34b = c for a

a = (34b + c)/25

400

Solve 5x + 1.4y = 2 for y

y = (2 - 5x )/1.4

400
Solve t = d/500 + 1/2 for d
d = 500t - 250
500

Formula for typing speed is s = (w-10*e)/m 

s is speed in words per minute, w is number of words typed, e is the number of errors, and m is the number of minutes typing. 

Solve for w (number of words typed) if you type for 10 minutes at 50 words per minute with 10 errors.

w = 600

500

The formula A=P+I shows that the total amount of money A received from an investment equals the principal P (the original amount of money invested) plus the interest I. 

Solve this formula for I and then evaluate I for A = 1,521 and P = 1,200.

I = 321

500

Solve d=rt for t. How long does it take you to walk 24 miles if you go slowly at 3 miles/hour?

8 hours.

500

Solve for y= (x-2)/4 for x.

4y+2 = x

500
Solve y = mx + b for m. What can you say about y if m = 0?
m = y - 6 x
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