What is the result of isolating x^2 in the equation below (x+1)^2+(y-8)^2=9

x² = 8 - (y - 8)² - 2x

x² = 16y - y² - 2x - 56

Step-by-step explanation:

∵ (x + 1)² + (y - 8)² = 9

∵ x² + 2x + 1 = 9 - (y - 8)²

∴ x² = 9 - (y - 8)² - 2x - 1

∴ x² = 8 - (y - 8)² - 2x

OR:

∵ x² = 8 - (y² -16y + 64) - 2x

∴ x² = 8 - y² + 16y - 64 - 2x

∴ x² = 16y - y² - 2x - 56

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.