Which statement is true about the product square root of 2 (3 square root of 2 + square root of 18 )?

it is rational and equal to 12.

it is rational and equal to 18.

it is irrational and equal to 6 + 2 square root of 2.

it is irrational and equal to 3 + square root of 8.

What is the value of x? enter your answer in the box. (cm)

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints