How many 3-coin combinations exist if we can choose from
pennies, nickels, dimes, and quarters?
Select one:
a. 20

b. 4!
O
C.4.
o
d. 12

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

what level of math? also i don't need to be paid if i can you.

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

table a is wierd

step-by-step explanation:

6*f