Pls

the temperature in degrees celsius (c) can be converted to degrees fahrenheit (f) using the formula f(c)= 9/5 c+k, where k is a constant. find k, if to c=−40ºc corresponds f=−40ºf.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?