Brianna has x nickels and y pennies. She has no less than 20 coins worth no more than $0.80 combined. Solve this system of inequalities graphically and determine
one possible solution.

Step-by-step explanation:

Given

maximum

minimum

Required

Solve graphically

First, we need to determine the inequalities of the system.

For number of coins, we have:

because the number of coins is not less than 20

For the worth of coins, we have:

because the worth of coins is not more than 0.80

So, we have the following equations:

Make y the subject in both cases:

Divide through by 0.01

The resulting inequalities are:

The two inequalities are plotted on the graph as shown in the attachment.

--- Blue

--- Green

Point A on the attachment are possible solutions

At A:

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

.632

step-by-step explanation:

6 * 1/10 = 3/5

3*0.01 = 0.03

3/5 + 0.03 = .63

2*0.002 = .002

.63 + 0.002 = .632