Roderick is counting the change on his dresser. he has twice as many pennies as he does dimes. he has twice the amount of dimes as he does nickels. he has 3 fewer quarters than dimes. which variable definition would be easiest for roderick to use when writing expressions for the number of all the coins? x = number of pennies because the penny has the least value of all the coins. x = number of nickels because there are fewer nickels than any other coin. x = number of dimes because all the other coins are compared to dimes. x = number of quarters because it has the greatest value of all the coins.

P = 2D

D = 2N  → N = D/2

Q = D - 3

Step-by-step explanation:

He has twice as many pennies as he does dimes. He has twice the amount of dimes as he does nickels. He has 3 fewer quarters than dimes.

P = 2D

D = 2N  → N = D/2

Q = D - 3

c) x = number of dimes because all the other coins are compared to dimes.

p=2d

d=2n=1/2d

q=d-3

Step-by-step explanation:

since dimes is mentioned in relation to  quarters, pennies, and the nickels, u would use d as ur variable ur expression would be : d + (2d) + (1/2d) + (d - 3) = total amount of coins...then u would solve for d, the number of dimes. And once u know that, u can sub that answer back into ur original equations to find the number of pennies, quarters and nickels

answer: a) (0,0), (1,1), (2,8), and (3,27).

step-by-step explanation:

0^3=0

1^3=1

2^3=8

3^3=27

in effect, the exponential equation for this would me y=3^x. each x-coordinate cubed is giving the y coordinate, so a is your answer : )

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.