Substitute from Word Problems Test Prep

1.

$F=9.8m$

The mass ($m$) of an object is related to the force of gravity ($F$) on Earth as shown in the formula above. If the object produced a force of 215.6N, what was the mass of the object? 

(A) 23.2 

(B) 22

(C) 205.8

(D) 2112.88

2.

$n=2000-5p^2$

A supermarket calculated an equation relating the price of an item ($p$) to the number of times it is purchased in a month ($n$). A specialty tub of ice cream is puchased 875 times in a month, how much does this ice cream probably sell for?

(A) 15

(B) 24

(C) 75

(D) 120

3. 

An prestigious blog site attempted to find a connection between the cost of plane tickets with distance travelled. $F$ is the estimated cost of a flight. $d$ is the distance measured in miles. The equation relating the two is listed below. If the cost of a flight is 149 dollars, how far away can a person travel?

$F=50+0.11d$

(A) 900

(B) 1809.09

(C) 90

(D) 66.39

4. Grid in your answer in the boxes below.

$A=\dfrac{\pi}{2}\times(\dfrac{d}{2})^2$

The area ($A$) of a semicircle is related to the diameter of the semicircle ($d$) as shown in the equation above. If the area of a circle is $162\pi$, what is the diameter of the semicircle?