The ratio is 5:4:7:9. The reason why they didn't write it together is that the bananas are written in different form.
$304 is the answer because 456/3 and then multiply by 2
B is definatly the correct answer, Add all of the prices, and that is what it costs per sweatshirt
Answer is a1 = 7
Using equation (derived from formula to find sum of values in a geometric series),

Hence, solve for a.
I will do number 1 only. You can then use my solution steps to do the rest.
Solve 4x + 5 > 5x − 2 for x.
4x + 5 > 5x − 2
4x - 5x > - 2 - 5
-x > -7
Dividing both sides by a negative number reverses the inequality sign. In other words, the sign > becomes < in the reply.
-x/-1 < -7/-1
x < 7
Answer: x < 7
The answer here means that whatever the value of x is for question 1, it must be less than 7.
You finish.