Q1) 4a + 7b +5a - b
Q2) 6c + 4d - c - 7 d

4a+5a+7b-b

the first thing is to put the like terms together

Step-by-step explanation:

then add or subtract as given after pairing.

Therefore;

our answer is; 9a+6b

since it is factorisable we can further write it this way; 3(3a+2b)

q2) 6c+4d-c-7d

we first put the like terms together

6c-c+4d-7d

we then add and subtract

5c-3d

since our answer is not factorisable we leavem;

5c-3d as our final answer

the red lines denote the population of the bacteria after 35 hours. that would be 2,409.24. the y-intercept is the blue line which is 800 because that is the starting point. the equation used to make the graph is 800(1.032)^h, where h is the number of hours.

step-by-step explanation: