Hey i'm kinda stuck on this one, can i get some ? sue buys a certain brand of cereal that costs $12 per box. sue changes to a super-saving brand of the same size. the equation shows the price, y, as a function of the number of boxes, x, for the new brand. y = 8x part a: how many more dollars is the price of a box of sue's original brand of cereal than the price of a box of the super-saving brand? show your work. part b: how much money does sue save each month with the change in cereal brand if she buys 4 cereal boxes each month? show your work.

Because the new function is y = 8x, we know each box costs $8.

The original brand costs $12 per box, so the new brand is $4 cheaper.

To find out how much we'd save if we bought 4 boxes, we can replace the value of x with 4 in each equation.

y = 12x

y = 12(4)

y = 48

y = 8x

y = 8(4)

y = 32

On buying 4 boxes, we'd save $16 with the new brand.

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

d

step-by-step explanation: