Select the best real-world problem for the equation x − 130 = 20. Then solve the equation. A Alf spent $130 on a physics text and found that he had only $20 left after his purchase. How much money did he have before buying the book? B Dan spent $130 on a physics text and found that he had only $20 left after his purchase. How much did the book cost? C Chuck spent $130 on a physics text and found that he had only $20 left after his purchase. How much money did he have after buying the book? D Bob spent $20 on a physics text and found that he had only $130 left after his purchase. How much did the book cost if it was taxed at a rate of 7.5%? The value of x is .

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step-by-step explanation:

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

all you have to do is multiply them both to see how many out comes you can put:

3 x 2 = 6

you can make 6 diferent combinations of crusts and toppings.

~batmans wife dun dun

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm