Answer:
the answer of the question is D
For Part A: the answer is 90 muffins total.
For Part B: the answer is 150 muffins total.
All you have to do is divide x (number of muffins the baker made) by 0.4 to get the total amount of muffins made.
The average can be found by adding them all up and dividing that number by the number of items. If the result have you a number that's more than the largest or less than the lowest, you did it wrong.
(75+70+90+60+50+90+70)/7
= 505/7
=72.14
Anyhow, the common ratio is 2, and the first term is 5 and since there are 5 terms, n = 5,
