Answer:
75
Step-by-step explanation:
at the top it says f(1)=25 which is 1 times f = 25 therefore f = 25
7
it equals 7 because i learn about this stuffs and i have more idea how to get my answer so it is 7 no other answer or you are going to get it wrong
the answer is the last one.
add 10 to right and left sides then divide both sides by 4.
I think your correct
B
