Answer:
1. -19x
3. 23 - 8x
5. -18x + 2y
Step-by-step explanation:
first: 3x - x = 2x
2x - 22x = -20x
-20x + x = -19x
second one:
8 - (-15) = 23
12x - 20x = -8 x
23 - 8x
third:
-10x - 8x = -18x
3y - y = 2y
-18x + 2y
Two cheaper books = x
more expensive = 1.5x
so, 2.5x=150
150/2.5=x=60
therefore the more expensive book = 90
Just simplify the following equation
2 (9.95) + 3 (11.99)
19.90 + 35.97
55.87 spent
$ 33.82
Step-by-step explanation:
If Lou already had 6.1 gallons in the 15-gallon tank, then the amount of volume left to fill was;
15 – 6.1 = 8.9
Lou, therefore, spent the following amount to fill the gas tank;
8.9 * $3.80 = $ 33.82
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