8
jennifer has $ 3.51 in change in her
piggy bank. the change consists of 51
coins inducing pennies, tickets and
quarters. if there are 3 umes as many
níckets as pennies, how many quarters
does she have?
enter your answer on the
answer document,

Jennifer has 7 quarters

Step-by-step explanation:

The correct question is

Jennifer has $ 3.51 in change in her  piggy bank. The change consists of 51 coins inducing pennies, nickels and  quarters. If there are 3 times as many nickels as pennies, how many quarters  does she have?

Remember that

Let

x ----> the number of pennies

y ---> the number of nickels

z ---> the number of quarters

we know that

-----> equation A

----> equation B

---> equation C

substitute equation C in equation A and equation B

-----> equation D

----> equation E

we have

-----> equation D

----> equation E

Solve the system of equations D and E by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (11,7)

x=11,z=7

see the attached figure

Find the value of y

so

The number of pennies is 11

The  number of nickels is 33

The number of quarters is 7

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|