PLS HELP (will mark brainliest) A line passes through the points P (2 , 5) and Q (4 , a). Given that the point R (b , 9) is the midpoint of PQ,
1) Find the value of a and the value of b
2) Find the equation of the line that passes through the points (2 , 3) and (1 , 7)
3) the point (4 , h) lies on the line with equation y= 5 - 2x ,find h.

How many $20 bills do you need to have to make $280

Which of these triangle pairs can be mapped to each other using two reflections?

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)) =