Answer: 1
Step-by-step explanation:
Simplify 9x+4x to 13x to get 13x=13
than dived both sides to get x=1
Answer: f(10) = -19
Step-by-step explanation:
1. Plug 10 into n
f(10) = -2(10) + 1
2. Multiply 10 by -2
f(10) = -20 + 1
3. Addition
f(10) = -19
(a) The team captain wants to know what his teammates eats before a match
Team captain know by taking a survey of teammates
(b) The team captain wants to know who can score most goals against the best player
This can be known by observation of games. so its observational study
(c) The team captain wants to know how praising the affects the teammates performance.
This can be known by experiment
(d) The team captain wants to know what other sports teammates play
This can be known by observation of games. so its observational study
