Question 1

Subtract. Simplify, if possible.
-

Accepted Answer

A)   
B)   
C)   
D)  2

Question 2

Find an equation of variation in which y varies inversely as x and the following is true.
-y = 50, when x = 26

Accepted Answer

A)  y = 1.92x 
B)   
C)   
D)  y = 1300x

Question 3

Solve the equation.
-

Accepted Answer

A)  2 
B)  1 
C)  0 
D)  6

Question 4

Find the ratio. Simplify, if possible.
-Mara can type 525 words in  hour (15 minutes). How many words per minute can she type?

Accepted Answer

A)  140 words/minute 
B)  131 words/minute 
C)  9 words/minute 
D)  35 words/minute

Question 5

For the pair of similar triangles, find the length of the indicated side.
- In the left triangle, the hypotenuse has length 10, and the longer leg has length 8. In the right triangle, the hypotenuse has length 5, the longer leg has length 4, and the shorter leg has length 3. Find the length, x, of the
Shorter leg of the left triangle.

Accepted Answer

A)  x = 6 
B)  x = 9 
C)  x = 4 
D)  x = 3

Question 6

Write the word or phrase that best completes each statement or answers the question.
 
-In the given problem  , what must be the polynomial that is represented by the question mark?

Accepted Answer

A)   
B)   
C)  (y + 4 )(y - 4 ) 
D)  (y - 4 )(y - 4 )

Question 7

Subtract. Simplify, if possible.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 8

Find an equation of variation in which the following are true.
-y varies jointly as x and w and inversely as z, and y =  when x = 2, w = 5, and z = 50.

Accepted Answer

A)   
B)   
C)  y = 4xwz 
D)

Question 9

Find the LCM.
-30, 18, 15

Accepted Answer

A)  45 
B)  30 
C)  18 
D)  90

Question 10

Solve the equation.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 11

Subtract. Simplify, if possible.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 12

Add. Simplify, if possible.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 13

Simplify.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 14

Multiply and, if possible, simplify.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 15

Perform the indicated operation. Simplify, if possible.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 16

Solve the equation.
-

Accepted Answer

A)  -9 
B)  0 
C)  9 
D)  No solution

Question 17

Solve.
-The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 34,000 mi has  in of tread left. How much tread will be left on a tire that has traveled 13,000 mi?
Express the answer as a fraction in simplest form.

Accepted Answer

A)  832 in. 
B)   
C)   
D)

Question 18

Simplify.
-

Accepted Answer

A)   
B)   
C)   
D)

Question 19

Solve.
-The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 482 vibrations per second and a wavelength of 12 ft. Find the wavelength of another tone that has a pitch of 348 vibrations per
Second. Round to the nearest hundredths when necessary.

Accepted Answer

A)  0.06 ft 
B)  13,978 ft 
C)  16.62 ft 
D)  1.66 ft

Question 20

Solve the problem.
-Maria and Charlie can deliver 88 papers in 4 hours. How long would it take them to deliver 55 papers?

Accepted Answer

A)  3.1 hours 
B)  2.5 hours 
C)  6.4 hours 
D)  220 hours

Exam 7: Rational Expressions and Equations

Subtract. Simplify, if possible. -

Find an equation of variation in which y varies inversely as x and the following is true. -y = 50, when x = 26

Solve the equation. -

Find the ratio. Simplify, if possible. -Mara can type 525 words in hour (15 minutes) . How many words per minute can she type?

Write the word or phrase that best completes each statement or answers the question. -In the given problem , what must be the polynomial that is represented by the question mark?

Subtract. Simplify, if possible. -

Find an equation of variation in which the following are true. -y varies jointly as x and w and inversely as z, and y = when x = 2, w = 5, and z = 50.

Find the LCM. -30, 18, 15

Solve the equation. -

Subtract. Simplify, if possible. -

Add. Simplify, if possible. -

Simplify. -

Multiply and, if possible, simplify. -

Perform the indicated operation. Simplify, if possible. -

Solve the equation. -

Simplify. -

Solve. -The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 482 vibrations per second and a wavelength of 12 ft. Find the wavelength of another tone that has a pitch of 348 vibrations per Second. Round to the nearest hundredths when necessary.

Solve the problem. -Maria and Charlie can deliver 88 papers in 4 hours. How long would it take them to deliver 55 papers?

Exam 7: Rational Expressions and Equations

Subtract. Simplify, if possible. -

Find an equation of variation in which y varies inversely as x and the following is true. -y = 50, when x = 26

Solve the equation. -

Find the ratio. Simplify, if possible. -Mara can type 525 words in hour (15 minutes) . How many words per minute can she type?

Write the word or phrase that best completes each statement or answers the question. -In the given problem , what must be the polynomial that is represented by the question mark?

Subtract. Simplify, if possible. -

Find an equation of variation in which the following are true. -y varies jointly as x and w and inversely as z, and y = when x = 2, w = 5, and z = 50.

Find the LCM. -30, 18, 15

Solve the equation. -

Subtract. Simplify, if possible. -

Add. Simplify, if possible. -

Simplify. -

Multiply and, if possible, simplify. -

Perform the indicated operation. Simplify, if possible. -

Solve the equation. -

Solve. -The amount of tread left on a tire varies inversely as the number of miles the tire has traveled. A tire that has traveled 34,000 mi has in of tread left. How much tread will be left on a tire that has traveled 13,000 mi? Express the answer as a fraction in simplest form.

Simplify. -

Solve. -The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 482 vibrations per second and a wavelength of 12 ft. Find the wavelength of another tone that has a pitch of 348 vibrations per Second. Round to the nearest hundredths when necessary.

Solve the problem. -Maria and Charlie can deliver 88 papers in 4 hours. How long would it take them to deliver 55 papers?