The probability that the major of one student that is selected at random is engineering can be calculated by the total number of engineering major divided by the total number of students
p = engineering / total students
p = 300 / ( 300 + 700 + 500)
p = 0.2 is the probability of the major of one student is engineering
        
             
        
        
        
Multiple different forms in the picture attached - for these problems use Math-way is super easy 
First is the exact form
 
        
        
        
Answer: About $118.66
Step-by-step explanation:
53.4/0.45 is 118.66
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
(8+-4/2, 10+-8/2)
 (2, 1)
 
        
             
        
        
        
Answer:
$5282.70
Step-by-step explanation:
the formula for calculating future value when there is continuous compounding is : A x e^r x N 
A= amount e = 2.7182818 
N = number of years 
r = interest rate
2500x e^0.055 x 2 = 5282.70