10. Marcelle uses a total of 6 plates to add 110
pounds to a weight lifting bar. He uses 25-
pound plates and 5-pound plates. Write and
solve a system of equations to find the
number of 25-pound plates and the number
of 5-pound plates he uses.

Marcelle will use 4 plates of the 25 lb & 2 plates of the 5 lb to fabricate the 110 lb weight lifting bar.

Step-by-step explanation:

There are 6 plates which consist of 25 lb plates and 5 lb plates.

We need to figure out how many of each one compose 110 lb.

Thus, 25 x 4 = 100... 4 plates of 25 pounds.

5 x 2 = 10 ... 2 plates of 5 lbs.

100+10= 110, which is our goal! And a total of 6 plates were used!

All things put into great consideration, Marcelle will use 4 plates of the 25 lb & 2 plates of the 5 lb to fabricate the 110 lb weight lifting bar.

I hope this helped!

~ Penny

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.