Answer is not b please help

63

Step-by-step explanation:

This sum (from n = 1 to n =6 of 128(1/2)^n can be found in several ways.  Since there are only a few numbers here to add together, we can just write out the given sum as

128(1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64), or

64         + 32  + 16  + 8 + 4 + 2 + 1, which sums up to 63.

is should be y = 5x

step-by-step explanation:

correct me if im wrong

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.