PLEASE HELP WILL GIVE BRAINLIEST! Write the Equation and show work. Find 'x', 'AC' and 'BC'

an equation you could use: AB+BC= AC

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Is there an x intercept in the equation 60*1.15^x

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants.assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1