X = unknown number
x - (-5) = 10
x + 5 = 10
x = 5, or B.
The y - value is $83.99 when x = 1 which represents the total cost for 1 month of membership.
Explanation:
Given that in city W, the average cost for a gym membership is given by the equation where y is the total cost, in dollars, for x months of membership.
We need to determine the meaning of the y - value when x = 1.
<u>The value of y:</u>
Let us determine the value of y when x = 1
Thus, substituting x = 1 in the equation , we get,
Thus, the y - value is $83.99 when x = 1 which represents the total cost for 1 month of membership.
k = 3 + 6x
note that 27 = 3³ and 9 = 3²
27 × = 3³ × (3²)^3x = 3³ × =
hence k = 3 + 6x