F(5) = 4*5-2
f(5)= 20-2
f(5) = 18 the value of x is equal to 5 to make the function equal to 18.

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Posted in Mathematics

If 12 eggs cost \$2.04 how much with 18 eggs cost

If 12 eggs cost \$2.04, you need to figure out how much 1 egg cost. In order to do that, you need to divide the cost (\$2.04) by the amount of eggs (12):

1 egg = 0.17

Now that we know how much 1 egg costs, we need to take that number and multiply it by 18:

In this case, 18 eggs will cost \$3.06.

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Posted in Mathematics

Find the ​twenty-ninthninth term of the arithmetic sequence 22​, 20​, 18​, …

The Twenty-Ninth term is -34. The arithmetic sequence is degrading by -2. Below is the sequence.

22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -12, -14, -16, -18, -20, -22, -24, -26, -28, -30, -32, -34

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What does x equal? 3(14x-15)=-72

The 3(14x-15) is basically multiplying so 3*14x-3*15 so that would be 42x-45=-72. After that, you add 45 on both sides canceling -45 and make the -72 to -27. 42x=-27, now you divide 42 into both sides making x=-27/45.

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Posted in Mathematics

What does x equal? 8(5x+2)=27

8(5x+2)=27

1. Distribute the 8 to both of the terms within the parentheses:
40x+16=27

2. Subtract 16 from both sides:
40x=11

3. Divide both sides on 40:
x=11/40
(you could do the actual division but this is an easier way to show 11 divided by 40)

4. Solution:
x=11/40

Posted in Mathematics

What does x equal? 3(x-7)=138+3x

3(x-7) = 138 + 3x      First multiply
3x-21 = 138 + 3x      subtract 3x from both sides
-21 = 138

This is a false statement because -21 does not equal to 138 so the answer is no solution.

Posted in Mathematics

What does x equal? 2x-8=2x+6+x

2x-8=2x+6+x

Add the like terms on opposite side mean add the 2x+x which equals 3x

2x-8=3x+6

Then combine the like terms on opposite side
2x−8−3x=3x+63x
then add 8 to both sides
-1x=14
-1x/-1=x
14/-1=
x=-14

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