Piggy bank
william's piggy bank contains some quarters and some dollar bills.
o = the number of quarter coins in the piggy bank.
d = the number of dollar bills in the piggy bank.
the following two equations are true
59=d
80 +d=91

see the explanation

Step-by-step explanation:

The correct question in the attached figure

Let

q ----> the number of quarter coins in the piggy

d ----> the number of dollar bills in the piggy

we have

----> equation A

----> equation B

Solve the system by substitution

substitute the value of d of equation A in equation B

solve for q

combine like terms

divide by 13 both sides

Find the value of d

therefore

The number of quarter coins in the piggy is 7 and the number of dollar bills in the piggy is 35

The total value in the piggy is

50

step-by-step explanation:

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)