Work out the value of z + x
y

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?