Can someone help me with this? It’s dues tomorrow this is for science but there’s no science

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?

15/16 as a decimal rounded to the nearest hundredth

[tex]5 \times1 \frac{12}{13} [/tex] me