In the figure below, pentagon rstyz is a regular polygon and mrst = 108°.
note: picture not drawn to scale if muty = 115°, what is mstu?

a. 108°
b. 115°
c. 223°
d. 137°

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122