Wednesday
February 10, 2016

# Homework Help: math

Posted by Angel on Monday, July 4, 2005 at 12:19am.

I am a little lost on my homework can someone help me with these problems please!
With a GM MasterCard, 5% of the amount charged is credited toward a rebate on the purchase of a new car. Express the R as a function of the amount charged A

Write a formula that describes the functionfor this problem.

#2. Graph this inequality: y<2x+2
#3. y<-2x+1
#4. y<7
#5.4x+3y>24
Thanks!!

1. R = 0.05 A = A/20
2. The region that satisfies the inequality is all of the area below the
y = 2x +2 line. The slope of that line is 2 and the y-intercept is (2, 0). (That means it goes through the point x = 2, y = 0)
3. The region that satisfies the inequality is all of the area below the
y = -2x +1 line. The slope of that line is -2 and the y-intercept is (1, 0).
4. The region that satisfies the inequality is all of the area below the
y = 7 line.
5. Rewrite as
y > -(4/3)x - 8
The region that satisfies the inequality is all of the area ABOVE the
y = -(4/3)x - 8 line. The slope of that line is -4/3 and the y-intercept is (0, 8).

I cannot draw graphs for you with tools availble at this website.

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