Yani buys a certain brand of cereal that costs $10 per box. yani 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 = 7x part a: how many more dollars is the price of a box of yani's original brand cereal than the price of a box of the super-saving cereal? show your work. part b: how much money does yani save each month with the change in cereal brand if he buys 5 cereal boxes each month? show your work.

Part A: If Yani's old cereal preference was $10, and the equation shows that the new cereal preference is $7, if I subtract the amount of the new one from the old, I'll get a total of $3.

Part B: For the old cereal preference, I have to multiply the cost of the cereal by the amount of times Yani buys it per month. So, 10(5) = $50. And the same with the new cereal preference 7(5) = $35. Now I have to subtract the amount of the new from the old once again. Yani will save $15 a month.

option (a)

step-by-step explanation:

step 1:   take 2 number whose product equal to 25..

and sum of those two number are -10

step: 2 for example here if we take 5,5 are the number,,

5*5=25

and

5+5=10

but we need -10

so if we take   -5,-5

so -5*-5=25

and -5+(-5)=-10

s0

come the equation

replace -10x by these number

like -5x -5x+25

take common

x(x-5)-5(x-5)=0

(x-5)(x-5)=0