Answer:
<h3>
a. a₁=7, b. a_n=7n+1, c. a₂₀=141</h3>
Step-by-step explanation:
a.

b.

c.

26.4 just multiply 6 * 4.4 and that would be the answer!
The answer is the third one
Answer: b) (32,28)
Step-by-step explanation:
Let x be the number of polio individual doses and y be the number of each measles individual doses.
Then the number of polio vaccination = 44x
The number of measles vaccination multi-dose = 22x
According to the question,

Dividing 22 on equation (2) both sides, we gwt

Subtract (1) from (3), we get

Substitute x=32 in equation (1), we get

Hence, Dr. Potter gives 32 individual polio vaccination and 28 individual measles vaccinations .