Amanda exercised for 10 minutes every day in the first week, 20 minutes in the second week, 30 minutes in the third week, and 40 minutes in the fourth week. billy exercised for 5 minutes every day in the first week, 10 minutes in the second week, 20 minutes in the third week, and 40 minutes in the fourth week. which statement best describes the methods used by amanda and billy to increase the time they spent exercising? (1 point) amanda's method is linear because the number of minutes increased by an equal number every week. billy's method is linear because the number of minutes increased by an equal factor every week. both billy's and amanda's methods are exponential because the number of minutes increased by an equal factor every week. both billy's and amanda's methods are exponential because the number of minutes increased by an equal number every week.

Amanda's method is linear because the number of minutes increased by an equal number every week.

Step-by-step explanation:

I took the test and got it right

 Amanda           Billy

1st week       10                   5

2nd week      20                  10 

3rd week       30                  20

4th week       40                  40

A) Amanda's method is linear because the number of minutes increased by an equal number every week.

common difference is 10.

1st week      0 + 10 = 10

2nd week   10 + 10 = 20

3rd week    20 + 10 = 30

4th week    30 + 10 = 40

Billy's method is exponential:

5(2)^x

1st week   5(2⁰) = 5(1) = 5

2nd week  5(2¹) = 5(2) = 10

3rd week   5(2²) = 5(4) = 20

4th week   5(2³) = 5(8) = 40

Mark PL

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

something that characterises a right triangle is the fact that we may use pythagoras' theorem to find any one of its sides given that we have the length of the other two sides. here, we have the length of the hypotenuse, √(87) yd, and one other side, √(23) yd, thus we can easily find the length of the remaining side using pythagoras' theorem as defined below:

c^2 = a^2 + b^2, where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

thus, given that c = √(87) and a = √(23), we may substitute these into the formula we defined above to get:

c^2 = a^2 + b^2

(√87)^2 = (√23)^2 + b^2 (substitute c = √87 and a = √23 into the equation)

87 = 23 + b^2 (evaluate (√87)^2 = 87 and (√23)^2 = 23 - remember that the square root of a number, squared will equal that very same number)

64 = b^2 (subtract 23 from both sides)

√64 = b (take the square root of both sides)

8 = b (evaluate √64 = 8)

therefor, the length of the unknown leg in the right triangle is 8 yd (first answer).