Determine whether y varies directly with x if so find the constant of variation k write the equation
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No, y does not vary directly with x

Step-by-step explanation:

Suppose y varies directly with x,

i.e. y ∝ x

⇒ y = kx,

Where, k is the constant of variation,

If x = 7, y = 11

⇒ 11 = 7k

⇒ k = ,

Thus, the equation that shows the relation between x and y,

If x = 8,

If x = 9,

If x = 10,

Hence, our assumption is wrong,

y does not vary directly with x,

the answer will be b x² +x-1

step-by-step explanation:

$655.61 which is option c

step-by-step explanation:

price of house =   $146,000

initial rate = 3.5%

mortgaged paid in this = 3.5 % of $146,000

                                        =

                                        =$5110

the total years would be = 7

total mortgaged paid = 7 * $5110

                                      =$35770

remaining money = $146000-35770

                                =$110230

new mortgaged payment = 5 % of 110230

                                            =  

                                            =$655.61