Which expression is equivalent to 100 in exponential form?

The system of equations graphed below has how many solutions?

Solve for x where 0 equation: cot^2x+2cotx+1=0

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.