1st : x² -8x - 24 =0
x'= ( 8 + √[(8² - 4 (1)(-24)] / 2 and x" = ( 8 - √[(8² - 4 (1)(-24)] / 2
x' = (8+√160) / 2 = (8+√(16x10) / 2 and x = (8+4√10)/2, simplify by 2
x' = 4+2√10, same for x" = 4 -2√10
2nd: Let x be the number of people to invite.
Given: cost of the band $750
cost of food : x.$2.25
Total cost = $750 + $2.25.x
To find the average you divide the total cost by the number of guest, that is x.
Average = ($750 + $2.25.x)/x
a)- For an average of $2.75
($750 + $2.25.x)/x =2.75 Solve for x and you will find 1500 guests
b)- For an average of $3.25
($750 + $2.25.x)/x =3.25 Solve for x and you will find 750 guests
So:
750<p<1500 (answer number 4)
Answer:
C) Without question, our relationship is in trouble, and we need help.
Explanation:
The conjunctive adverbs <em>however</em> and <em>in spite of</em> demonstrate <u>contrast</u> between ideas. Another conjunctive adverb (<em>still</em>) signifies <u>concession</u><em>.</em> Yet the underlined sentence "our relationship is in trouble, and we need help" is not related to the preceding sentences of the paragraph by way of contrast or concession to their ideas.
The phrase without question adds logical emphasis and confirms the obvious fact that the relationship is in trouble. C would be the correct choice.
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