First one is domain: (0, 4) range is (negative infinity, positive infinity)
second one: domain: (0,-2) and the range is (-2, infinity)
4). x/5 =8
x = 40
5). 2x/3 = 12
2x = 36
x = 36/2 = 18
6). x + 26 =12
x = 12 - 26 = -14
7). 8x + 1 = -23
8x = -23 -1
8x = -24
x = -24/8 = -3
8). 2x + 5 =15
2x = 15 - 5
2x = 10
x = 10/2 = 5
9). 3x - 1 = -29
3x = -29 + 1
3x = -28
x = -28/3 Or 9.33
10). 8x - 12 = 53
8x = 53 + 12
8x = 65
x = 65/8 Or 8.12
11). 4x + 7 = 25
4x = 25 - 7
4x = 18
x =18/4 = 9/2 Or 4.5
X - ¹/₅ > ¹/₄
<u> + ¹/₅ + ¹/₅
</u> x > ⁹/₂₀
The solution set is equal to (⁹/₂₀, ∞).
Marginal cost=cost of adding 1 more worker
marginal benefit=benefit of adding 1 more worker
marginal cost=$9 per hour for 30 hours or $270
marginal benefit=$5 per car times 50 cars=$250
270>250
marginal cost>marginal benefit
nope, won't hire because cost>benefit
and profit is negative
3rd option