Snorkel and two friends rented three life jackets and a sailboat. the life jackets were $3 each and the boat was $12 an hour. the total cost was $93. for how many hours did they rent the sailboat?
(i need an equation along with the answer.)

The equation is hr= (TC-Pxj*x)/Pxs

They rent the sailboat for 7 hours

Step-by-step explanation:

We have to get the total cost, that will be the price of the jackets multiple by the quantity of person + the price of the rent of the  sailboat multiple by the quantity of hour.

The equation will be:

Total cost= price of the jackets* the quantity of person + the price of the rent of the  sailboat * the quantity of hour.

Price of the jackets=Pxj = $3

The quantity of person= x= 3

The price of the rent of the  sailboat= Pxs=$12

The quantity of hour= hr=?

TC=Pxj*x +Pxs*hr

hr= (TC-Pxj*x)/Pxs

hr=  (93-$3*3)/$12

hr= ($93-$9)/$12

hr= ($84)/$12= 7 hr

d is the answer

step-by-step explanation:

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.