Marcus and Tia live in different states where the sales tax on items is different. Marcus buys a pair of shoes that cost
$35.99 plus 5.5% tax. Tia buys a pair of shoes that cost $39.99 plus 9% tax. Tia uses a coupon for 15% off her
purchase. What is the difference in the total costs, to the nearest cent, that Marcus and Tia pay for their shoes? Show
your work using expressions or equations.

$37.97 - $37.05 = 0.92 cents

Step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.