

1. 
The equation where d represents the distance in miles and t is the number of seconds between seeing lightening and hearing thunder, tells how far away a thunderstorm is. How far is it to a thunderstorm if you count 15 seconds between seeing the lightening and hearing the thunder? 


A. 
15 miles 
B. 
1 mile 


C. 
3 miles 
D. 
10 miles 


Hint 


2. 
Evaluate 7 × (a  4) if a = 9. 


A. 
59 
B. 
28 


C. 
35 
D. 
63 


Hint 


3. 
Evaluate ab + 8 if a = 4 and b = 7 


A. 
55 
B. 
36 


C. 
60 
D. 
28 


Hint 


4. 
Evaluate 5k + if k = 3, m = 20, and n. = 5. 


A. 
20 
B. 
57 


C. 
19 
D. 
7 


Hint 


5. 
Evaluate x^{2} + 2xy + y^{2} if = 4 and y = 7. 


A. 
86 
B. 
78 


C. 
121 
D. 
65 


Hint 


