Consider the following set of equations:

equation a: y = 2x + 4
equation b: y = 3x + 1

which of the following is a step that can be used to find the solution to the set of equations?

2x + 4 = 3x + 1

2x = 3x + 4

2x + 4 = 3x

2x + 1 = 3x + 4

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet