1. choose the equation you can use to solve the following problem. each cupcake costs $4.00. how many cupcakes, x, are purchased if the total cost is $36.00? (1 point) 2. choose the equations you can use to solve the following problem. sam is 3 years younger than marco. marco is 15 years old. how old is sam? let x represent sam's age, in years. (2 points) 3. the equation below represents how many hours, x, it will take to travel 210 miles at an average speed of 60 miles per hour. how long will it take? 60x210

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.