SOMEONE PLZZZ HELP ME ASAP ON MY MATH TEST THANK YALL SO MUCH PLZZ ASAP

In what form is the following linear equation written y=9x+2

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?

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?