1. 4-7 Equivalent Formulas
Temperature Scales
_________ scales are based on the boiling
point which is ____ & freezing point of ___.
__________________ scales are based on
the boiling point which is ___ , and freezing
point of __.
______scale is based on _______ ____ which
is when an object has no ____ and the mole-
cules stop ______ : ___________________

2. Celsius to Fahrenheit : Fahrenheit to Celsius, solve this equation
Converting Temperatures 9 5
F =
C + 32
Celsius to Fahrenheit :
Fahrenheit to Celsius, solve this equation
for C.

3. 1. Consider the formula A = p + pr, which gives the amount A (in dollars) after one year in a bank
account that started with p dollars and which has an
annual yield of r.
a. Solve this formula for p. b. Solve this formula for r.

4. 2. Solve C = 2πr for the variable r. C is the circumference of a circle
with radius r.
3. A formula for the area of a sphere is A = 4πr². Solve the formula
for r. Explain what you do in each step.

5. Putting r over 1 creates a _________ which can be solved
4. If a coin is tossed and H heads and T tails
appear, the relative frequency r of heads is
expressed by the formula
a. Solve this formula
for T.
Putting r over 1
creates a _________
which can be solved
by _____________.

6. -10 < x < 10 & -10 < y < 10
5. Use a graphing calculator to graph
-7x + 3y = 18. What equation would you need to
enter into the calculator?
Graphing
calculators
____ have
the equation
__________.
Use the window:
-10 < x < 10 & -10 < y < 10

7. 7x 3
+ 6 10
y =
-10 10

8. The radius is 31.85 m. The radius is 27.07 m. P – 2t = r 2π6.
The radius
is m.
The radius
is m.
P – 2t = r 2π
400 – 2(100) = r
2(3.14)
200 = r
6.28
31.847… = r
P – 2t = r 2π
400 – 2(115) = r
2(3.14)
170 = r
6.28
27.070… = r
P = 2l + 2w
C = 2πr
P = 2t + 2πr
-2t -2t
P – 2t = 2πr
2π π