The answer is f(x) = -2(0.7)^x that is the correct answer, I just did the question and got it right.
17. (x^2-x+3)(4x+1)
18.(x+2)(x) - (7)(3)
Answer:
0.375
Step-by-step explanation:
Plug it into a calculator
<h3>
Answer: </h3><h3>Fred has <u>20 students</u> and Lee has <u>22 students</u></h3>
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Work Shown:
L = number of students in Lee's class
F = number of students in Fred's class
Lee has 1.1 times as many students compared to Fred
This means we have this equation
L = 1.1F
Whatever the value of F is, we multiply that by 1.1 to get the value of L
The two amounts L and F add to 42 total students
L+F = 42
1.1F + F = 42 .... replace L with 1.1F
2.1F = 42
F = 42/(2.1)
F = 20 .... Fred has 20 students
L = 1.1*F
L = 1.1*20
L = 22 .... Lee has 22 students
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Check:
L+F = 22+20 = 42
this confirms the answer
dowload this app now hehe:) p.h.o.t.o.m.a.t.h
