have you ever ridden or seen a roller coaster in action? did you
know that the algebra that you have learned in this unit is related to the math that
engineers use to design roller coasters? engineers want roller coasters to be fun
and scary, but also safe.

step-by-step explanation:

i could only see the first page. the other pages were blurry. ; -;

x hot dogs for 2$, y drinks for 3$. 29 items and total 70

2x+3y=70

x+y=29

if x=17and y=12

2(17)+3(12)=70

34+36=70

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0