Which inequality models this problem? Nico finds two online stores both sell the same kind of party hats that he wants. Store A sells the hats for $7 each and does not charge for shipping. Store B sells the hats for $4 each and charges a flat rate of $9 for shipping.

What is the minimum number of hats Nico will need to buy for the cost to be less at store B than store A?

a. 7x<4x+9
b. 7x>4x+9
c. 7x<4x−9
d. 7x>4x−9

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation: