If the national average for a gallon of gas is $3.10, how much should you expect to pay for gas in philadelphia versus atlanta

$3.63 / $3.29

Step-by-step explanation:

In Philadelphia, you would pay:

= 3.10 * Percentage of national average for transport

= 3.10 * 117%

= $3.63

In Atlanta:

= 3.10 * Percentage of national average for transport

= 3.10 * 106%

= $3.29

The table below compares the cost of living in Philadelphia  and Cleveland, with the numbers representing percentages of  the national average.

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.