posted by Sam .
Hi, here is a question and my answer I have done so far, not sure about the end result so any help appreciated
Multiply out brackets 5a-10+8a =-9
Add 10, 5a+8a=1
Collect like terms 13a = -9
Divide by 13 = a =1/13
I am pretty sure the answer should be a = -1/3 but not sure how to get there, , thanks
You have an error in your first step when you multiplied:
-2(5 + 4a)
It is not -10 + 8a .
Salisbury High School decided to take their students on a field trip to a theme park. A total of 150 people went on the trip. Adults pay $45.00 for a ticket and students pay $28.50 for a ticket. How many students and how many adults went to the park if they paid a total of $4770
Please do not append a new question at the end of somebody else posting.
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let number of adult tickets be a
let number of student tickets be 150-a
45a + 28.5(150-a) = 4770