4 * 25 = 100 this is your answer
The difference between a number divided by 3 and 4 is 20.
- = 20
multiply by 12
4n - 3n = 12(20)
n = 240 is the number
and,
Aubrey has $120 to spend on a tennis racket and lessons.
The racket costs $45 and the lessons cost $15/hr.
How many hours of lessons can she afford?
hrs =
hrs = 5 hrs
<h3>Answers:</h3>
- b
- a
- d
- c
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Explanation:
For problem 1, we will plot a closed circle at x = -2 to include this value in the shaded solution set. We include it because of the "or equal to". The shading is to the right because of the "greater than". So we're describing all x values that are either equal to -2 or larger than -2. You could say "x is -2 or larger".
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In problem 2, we'll exclude the endpoint since we don't have "or equal to". We shade to the left to visually show all values smaller than 3.
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In problem 3, we follow the same idea as the last problem. We have an open hole to exclude the endpoint and shade to the right of 12 to describe all values larger than 12.
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With problem 4, we now include the endpoint again. This is similar to problem 1. We shade to the left to describe x values that are either -15 or smaller.
We are given with two inequalities and is asked to determine the solution to the given inequalities. x+2y ≤ 43x-y ≤ 2we can multiply equation 1 by -3 and add the two equations then. y is equal to 10/7 while x is equal 8/7. In this case, the region of domain is numbers less than 8/7 and that of range is numbers less than 10/7
