Ashopper bought a watermelon, a pack of napkins, and some paper plates. in his state, there is no tax on food. the tax rate on non-food items is 5%. the total for the three items he bought was $8.25 before tax, and he paid $0.19 in tax. how much did the watermelon cost?

The shopper bought a watermelon costing $4.45

Let x represent the cost of watermelon

y = cost of napkin + cost of paper plates

The tax rate on non-food items is 5%, hence:

5% of y = 0.19

0.05y = 0.19

y = $3.8

The total for the three items he bought was $8.25 before tax, therefore:

x + y = 8.25

x + 3.80 = 8.25

x = 4.45

The shopper bought a watermelon costing $4.45

Find out more at: link

The answer to your question is: $4.45

Step-by-step explanation:

Data

Tax on non-food = 5%

Total  of the three items = $8.25

tax = $0.19

Watermelon = ?

Process

Rule of three

                                 $0.19  5 % tax

                                     x      100 %

                                    x = (0.19 x 100) / 5

                                    x = 19 / 5

                                    x = $3.8   This is the cost of the napkins and paper

                                                     plates.

Watermelon price = $8.25 - $3.8 = $4.45

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2