two batteries cost 3.00 A twelve pack of the same batteries cost 15 is the relationship between the number of batteries and the price proportional

Step-by-step explanation:

$3/(2 batteries)  = $1.50/battery

$15/(12 batteries) = $1.25/battery

Not proportional.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5