A plumber uses the equation c = 35h + 70 to determine the total amount of money charged for a service call, where h represents the number of hours worked and 70 represents a one-time fee. Based on this equation, how much should she/he charge for working 1.5 hours on a service call when no parts are required?

$122.50

Step-by-step explanation:

All you have to do is plug in the number(s). In this case, you put 1.5 in for "h", and you multiply 35 by 1.5, which gets you 52.5, then you just add 70, which gets you 122.50.

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.