The 2014 winner of the Boston Marathon runs as many as 120 miles per
week. During the last few weeks of his training for an event, his mileage
can be modeled by the function below, where w represents the number of
weeks since training began. Which statement is true about the model
M(w)? *
M(w) = 120(.90)*-1

A) The number of miles he runs will increase by 90% each week.
B) The number of miles he runs will be 10% of the previous week.
C) M(w) represents the total mileage run in a given week.
D) w represents the number of weeks left until his marathon.

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true

57.09 minus 7.0435 equals

step-by-step explanation:

just subtrach them both and u get the answer of 50.0465

#12 the answer is the third option