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Below is a piece of a local pizza place menu where Jacob works.

Large Cheese Pizza $14.85
Large Supreme Pizza $16.90
Cheese Sticks $5.99
Dessert Pizza $6.99

3. A customer calls in a delivery order for 3 large cheese pizzas and 2 dessert pizzas. The customer wants to give a 20% tip to the delivery driver. Jacob says that $5 would be about 20%. Is this reasonable? Justify your response using estimation. If the answer is not reasonable, identify the error and then calculate the correct solution.

4. The largest order last Saturday was from a basketball team that ordered 5 large supreme pizzas, 5 large cheese pizzas, 5 orders of cheese sticks and 5 dessert pizzas. Jacob said the total was about $225. Is this reasonable? Justify your response using estimation. If the answer is not reasonable, identify the error and then calculate the correct solution.

5. Adding additional toppings to a large cheese pizza cost $1.39 per topping. The equation 14.85 + 1.39x = 20 can be used to determine the number of toppings that can be added to a large cheese pizza for a total of $20. Jacob solves the equation and says you can get 4 toppings added if you have $20. Is this reasonable? Justify your response. If the answer is not reasonable, identify the error and then calculate the correct solution.

Question

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Respuesta :

lillysiege lillysiege · Answer 1 · 2019-02-12T14:15:32+01:00

Answer:

SEE BELOW

Step-by-step explanation:

C = 14.85

S = 16.90

c = 5.99

d = 6.99

3) 0.2(3C+2d)

round C to 15 and d to 7 cause that's about right

No cause that's about 12 and 5 is way too low.

So actually work it out now

0.2(3(14.85)+2(6.99))

0.2(44.55+13.98)

0.2(58.53)

11.706 but in terms of money it would be 11.71

4) 5S+5C+5c+5d

C is about 15, S is about 17, c is about 6, d is about 7

that is about 225

That seems reasonable.

(The real total though is 2223.65)

5) t=1.39

14.85+1.39x=20

Lets round those numbers again to make it easy to work with

15+1.5x=20

1.5x=5

x=3.33333

No, you cannot add 4 toppings and still pay $20

He over estimated

1.39x=5.15

x=3.70503597

you can get 3.