If f(x) = (3x + 7)²
then f(1) = (3(1) + 7)²
= 10²
⇒ f(1) = 100 [OPTION E]

Sums of cubes can be factored as

So

Answer:
5 hours
Step-by-step explanation:
you would so 100 minus 25 (25 is just one charge fee) which is 75 then divide 75 into 15 which is the hourly pay, and get 5 which is the hours he must work
Answer:0,3 for y and 4,0 for x
the second one is 0,6 for y and for the x it will be -3,0
Step-by-step explanation: