Mark wanted to buy a phone for $200. the phone was then put on sale for 10% off of its price. the next day mark discovered that the phone had an additional 30% off of its sales price. what was the percent of discount from when mark bought it versus it's original price?

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

5x−4≥12 or 12x+5≤−4 can you with this problem