7. A pizza has a diameter of 18 inches. It is
then cut into eight equal pieces. About how
many square inches is each slice of pizza?

31.8 in^2 per slice

Step-by-step explanation:

to get the radius (r) you divide the diameter (d) by 2, so its 18/2 which is 9, then you plug 9 into the formula for a circle

A=πr2=π·92≈254.469

thats the area for the whole pizza, then you divide that by 8 (for the 8 slices) which is 254.47/8, which gives you 31.80875

31.80875  rounds to 31.8 in's, but you have to make sure its in^2 because its area

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

linear pair postulates