Question

Please help me and explain it please questions 28

Answer 1

$1.35

Explanation:

x: quarter=$0.25

y: dime=$0.10

z: nickel=$0.05

so total amount of changes

= (0.25*x)+(0.10*y)+(0.05*z)

x=3, y=5, z=2

substituting into the eqn

total = (0.25*3)+(0.10*5)+(0.05*2)

= 0.75 + 0.5 + 0.1

= $1.35

Answer 2

.25*x +.10*y +.05*z

We have 1.35 which is the value of our coins.

Explanation:

We need to multiply how much each coin is worth by the number of each type of coin we have.

If we have x quarters then we multiply x by .25 and we have y dime then we multiply y by .10 and we have z nickels then we multiply z by .05. To find out how much money we have, we add it all up

Our equations becomes

.25*x +.10*y +.05*z

We have x=3 or 3 quarters, y = 5 or 5 dimes and z=2 or 2 nickels

.25(3) + .10 (5) +.05(2)

.75+.50+.10

1.35

We have 1.35