Mr. Jeffords starts a diet and exercise plan to lose weight. He currently weighs 214 pounds but would like to weigh 190 pounds. His doctor suggests he will
lose 1.5 pounds per week by following the plan. Which number line represents
the period of time since starting the plan, in weeks, when Mr. Jeffords will still
weigh more than 190 pounds?

a

step-by-step explanation:

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.