Question

Please help meeeeee with this

1.What is the constant in the expression?

−3x+4y+1.8−3x+4y+1.8

−3−3

1.8

3

4








2.How many seconds equals 4.2 hours?

Enter your answer in the box.








3.Solve for x.

−5x−4(x−6)=−3-5x-4(x-6)=-3









4.The formula for the average of two numbers is m=a+b2m=a+b2

Solve for a.

Enter your answer in the box.
a =









5.What is the solution to the inequality?

5(x−2)<−3x+6










6.What are the x- and y- intercepts for the line y−3=3(x+5)y−3=3(x+5)?


The x-intercept is
.

The y-intercept is










7.Which ordered pairs are on the line with equation y+3.5=0.75(x−2)y+3.5=0.75(x−2)?

Select each correct answer.

​ (4, 2)(4, 2) ​

​ (−4, −8)(−4, −8) ​

​ (7, 5.5)(7, 5.5) ​

​ (1, 1.75)(1, 1.75) ​











9.The local movie theatre has $85 to purchase new movie posters that cost $14.65 each and frames that cost $11.75 each where x is the number of purchased movie posters and y is the number of purchased frames.

Enter an inequality in standard form that represents this situation in the box.









13.The function f(x)=−4x+3f(x)=−4x+3 is a linear function. Let g(x)g(x) represent f(x)f(x) after a horizontal translation 2 units to the left.

What is the equation for g(x)g(x) ?



Enter the answer in the box.
g(x) =











14.A company employee has to print 3145 pages, and the company's printer prints 85 pages per minute. The function f(x)=−85x+3145f(x)=−85x+3145 represents the number of unprinted pages x minutes after the printing begins.

What is the practical domain of function f?

all whole numbers from 0 to 37

all real numbers from 0 to 37

all real numbers from 0 to 3145

all multiples of 85 between 0 and 3145

Answer 1

Alright, let's do all of these (though this is a bit long).
1.
The constant is 1.8. All other values are coefficients to variables, which as the name implies will change.
2.
1 hour is 60 minutes, 1 minute is 60 seconds.
So, 4.2 *60 *60 = 15120 seconds.
3.
−5x−4(x−6)=−3-5x-4(x-6)=-3
Let's move all x to one side, and all other numbers to another.
-5x-4(x-6)=-3-5x-4(x-6)=-3
x can be any value you want, if you actually solve this you'll only end up with -3 = -3, which is correct, of course.
Let me show you:
−5x−4(x−6)=−3-5x-4(x-6)=-3
+5x +4(x-6) +5x +4(x-6)
-3 = -3
The value of x is irrelevant, then. X can be any real number.
4.
I'm going to assume it was an error in printing with this? If not please correct me.
m=a+2b(or b2)
subtract 2b from each
a=m-2b
(This question seems kind of odd. We should probably address this in the comments.)
5.
5(x−2)<−3x+6
Move all x to one side, numbers to other.
5x-10<-3x+6
+3x +3x
+10 +10
8x<16
/8
x < 2
6.
y-3=3(x-5)
alright, to find zeros set one variable to zero and solve
x first
-3=3x-15
+15 +15
3x=12
/3
x=4
x-int is (4,0)
now y
y-3=3(0-5)
y-3=-15
+3 +3
y=-12
so y-int is (0,-12)
i've got to sleep now so i'll do the rest tomorrow. Sorry for the incomplete answer.