Let x be the number on the first bus.
The distribution of students is x + (x +4) + (x + 4 + 9) = 167
3x + 17 = 167
3x = 167 - 17 = 150
The number on the first bus x = 50
The number on the second bus = 54
The number on the third bus = 63
Answer:
2x-9y
when you add 2 and 7 it's 9, so add the y, then 4-2 which is 2, add an x.
2x-9y
Answer: $72
Step-by-step explanation: You have to realize that $54 is 75% of the original price, meaning that $54 is 3/4 of the original. Therefore, you must divide 54 by 3 to get 18, which is 25% of the origianl price. Since you now know what 25% of the original price is, you just have to add 18 to 54 to get $72. 72 dollars is 100% of the original price of the coffee table.
Actually, the slope is undefined. this is because x remains the same as y increases. as a graph this looks like x=1, a straight vertical line at 1x. this can not be expressed as a slope, so we write undefined.