Answer:

Step-by-step explanation:

Step-by-step explanation:
domain(6,3,9,5,8)
range(2,5,0,7,1)
Answer:
2/1 and 4/2 are equal to 2
Step-by-step explanation:
now one denominator is x^2 + 8x + 15
if we factorise then (x +3)(x +5)
now in expressions which have like x+3 as denominator ...you multiply and divide them by x+5 and once u get denominator equal you can add numerator easily
Method 1 :
(152+138+160)÷3 = 150
(152+138+160+198)÷4 = 162
Then his average score will increase
Method 2 :
Since 198 > 150 then the average will increase automatically.