I have a few questions I need to be checked and one I need to go over, anyone up for the task? i'll post the questions down below...

Question

anonymous · Answer

Maria brings d dollars to an amusement park. The park charges an admission fee of $20. Each game at the park costs $1.50. Which inequality shows the number of games, g, which Maria can play?  (4 points)
20 + 1.5g ≥ d
20 + 1.5g < d
20 + 1.5g > d
20 + 1.5g ≤ d<<<My Answer


7.   Which equation represents the line passing through the points (2, −2) and (−5, 12)?  

2x − y = 2
2x + y = 2
x + 2y = 2
x − 2y = 2


8.   A company makes jewelry. It costs $6,400 to make 10 pieces of jewelry and $11,200 to make 20 pieces of jewelry. Which equation models the cost, C(x), as a linear function of the number of pieces of jewelry, x?  

C(x) = 480x + 1600<<< My Answer
C(x) = 1600x + 480
C(x) = 480x − 1600
C(x) = 1600x − 480

amistre64 · Answer

if you can do 8, you can do 7

anonymous · Answer

I had help with 8, but I still don't understand how to solve it, he tried to explain but got frustrated and just gave me the answer and left... do you think you could help explain it better

amistre64 · Answer

you have 4 equations to "test" with; and values for x and y to plug in; see what fits

amistre64 · Answer

or, go the long route of coming up with an actual equation from the given data

anonymous · Answer

okay, im the process of doing so... I just need a little to check the all... why couldnt the guy just say that before... lol he made it seem much more complicated

amistre64 · Answer

if a test gives you options, the quickest route is to see what fits; if you have to come up with an equation from scratch, the longer way is required;  but this here just amounts to plugging in the values and see what fits

anonymous · Answer

so, the answer would be B, right?

amistre64 · Answer

lets see :)

2x + y = 2
 2   -2
-----------
4 - 2 = 2 , that ones good


2x + y = 2
 -5  12
-----------
-10+12=2 , i like it

anonymous · Answer

yay! :) Thanks! I do have two more that are confusing me, could you help with them as well?

amistre64 · Answer

post them to the left so that others can participate and get just rewards as well.

anonymous · Answer

oops I didnt mean to do that

anonymous · Answer

sorry

anonymous · Answer

I deleted it, no worries, ill go post the other two now, thanks again you guys!! :)