3. Twelve runners are asked to run a 10-kilometer race on each of 2 consecutive weeks. In one of the races, the runners wear one brand of shoe and in the other, a different brand. The brand of shoe a they wear in each race is determined at random. All runners are timed and are asked to run their best in each race. The results in minutes) are given below.

Use the test for matched pairs to determine if there is evidence that times using Brand 1 tend to be

faster than times using Brand 2. What is the approximate) value of the P-value?

A) 0.019

B) 0.042

C) 0.050

D) 0.073

f(x) is the value of the function. b is the value of the function when x equals zero or the y-coordinate of the point where the line crosses the y-axis in the coordinate plane.

step-by-step explanation:

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rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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