Answer:
i think its b
Step-by-step explanation:
The answer is $1.50<span>. Internet </span>cost<span> and the number of days vary directly, the </span>equation<span> is of the form y = kx, where k is the </span>constant<span> of proportionality. y = (1.50)x; Therefore, 1.50 is the </span>constant<span> of proportionality</span>
9v - 8(10v - 9) = 9v - 80v + 72 = <u>-7</u><u>1</u><u>v </u><u>+</u><u> </u><u>7</u><u>2</u>
You have to replace the x with the 2
f(2)= 5(2)-12
f(2)= -2