Sophia trains with her friend Aisha on a 5-kilometer trail near their school. Aisha starts running right after school and runs an average of one kilometer in seven minutes. Sophia leaves 10 minutes later and runs at a steady pace shown in the table below. Write each function as a linear equation where x is the number of kilometers and y is the number of minutes. Who runs faster? Explain.

(3x-8) or (3x+8)

step-by-step explanation:

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

answer: rolling a number cube and flipping a coin.

step-by-step explanation: