(25 points and brainliest for best)
the aspect ratio of a laptop monitor is 1.625: 1. the aspect ratio of a monitor is the ratio of its width to its height.

write this as a ratio that involves only whole numbers, using the smallest whole numbers possible.
:

if the monitor is 15 inches wide, what is the height? round the answer to nearest hundredth if necessary.

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Someone answer this asap rn 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)) =

What is the total area of the figure?