Please Help Fast Algebra 1

The answer is B.

Step-by-step explanation:

The question ask us to find an equation for the cost of a fill-up and a car wash. Firstly, we have to form 2 coordinates from the table and find the gradient :

Let Tank Size be x and Total Cost be y,

Any 2 coordinates,

Let (11,21.45) be (x1,y1) & (15,28.25) be (x2,y2),

m = (28.25-21.45)/(15-11)

= 6.8/4

= 1.7

You can form equation using slope-form, y = mx+b, then substitute m value and any coordinates into the equation :

Let m= 1.7 & (17,31.65),

y = mx + b

31.65 = 1.7(17) + b

31.65 - 1.7(17) = b

b = 2.75

y = 1.7x + 2.75

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

$12. that is my answer.