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Cool thanks, I will try and figure out some if I can with that equation. Thanks.
So just use the process of elimination? I tried doing that but none of my math turned out to be any answer choice given :/
whats so funny dude?
let me explain
so the answer is b?
Go ahead you can probably help her way more that I can.
let lunges = x and sit ups = y so his trainer has said not to do total more than 27 so x+y =27 and he should burn atleast 620 calories so 30 calories for lunges and 20 for situps so you have 30x+20y =620 solve these 2 equations you will get answer
Goodness...I knew how to do that and totally forgot about the other equation :P Lol I always do stuff the hard way cause i forget the easier way.
i am not so good at substitution but I am leaning towards answer choice b. am i correct?
star hunterrr what will you do if there are no options given
Well I work backwards a lot, so I guess I will fail. I know I need to practice more. but for now, I just wanna get this review done :) and make sure I am ready for my exam tomorrow.
well you cant solve the equations then are you?
okay do this x+y =27 x= 27-y put value of x in 2nd equation and find y
Well now i am doubting myself. I worked through the steps and 630 is what i got. So. am i right? about the answer being b?
11+25 = 26
well none of them totals 27 :|
yeah that's where i am getting stuck. I keep plugging in all the answer choices but none of them seem to make sense.
i guess it is right not more than 27 and atleast 620 so you can go for B
that was my rationale