$f(x)=3x^2-2x+5\\\\
f(1):\ \ Substitude\ 1 \ as\ x\ into\ function:\\
f(1)=3*1^2-2*1+5=3-2+5=\textbf{6}\\\\
f(-2)\ \ Substitude\ x=-2\\
f(-2)=3*(-2)^2-2*(-2)+5=3*4+4+5=12+4+5=\textbf{21}\\\\
f(a)\ \ substitude\ x=a\\
f(a)=\underline{3a^2-2a+5}$

4 0

3 years ago

A rectangular garden has length and width as given by the expressions below.

Tom [10]

Answer:

P = -12xy - 56y - 42x + 8

Step-by-step explanation:

P = 2L + 2W

P = 2(4 - 7(3x + 4y)) + 2(3x(-2y))

P = 8 - 14(3x + 4y) + 6x(-2y)

P = 8 - 42x - 56y - 12xy

P = -12xy - 56y - 42x + 8

3 0

3 years ago

Read 2 more answers

Help if your smart plzzzzzzz <br> ( will give 35 pts and brainliest)

Temka [501]

Answer:

a) alternate interior angles theorem

b) OXP ≅ XOL

c) XO ≅ OX

d) reflexive property (i'm not sure about this one)

e) ΔXOP ≅ ΔOXL

f) cpctc

make sure to double check the fourth one

4 0

2 years ago

Write an algebraic expression for the phrase : Seven less than three times a number

Natali [406]

Answer:

I'm not completely sure but try either 3x - 7

or 3 - 7x

Step-by-step explanation:

Hope one of them helps!

3 0

2 years ago