3 questions for 15 points 1. Randomly selecting a page in a booklet, the chance to get an even

page number is 48%. How many pages does the booklet have?

2. What is the units digit of the sum of all positive multiples of 6

smaller than 500?

3. If each dimension of a rectangle decreases by 1, its area will

decrease from 2017 to 1717. What will be the area of the rectangle if

each of its dimensions increases by 1?

100 pages

Unit digit = 6

Step-by-step explanation:

Chance of getting an even page number = 48% = 0.48

P(Not even) = 1 - 0. 48 = 0.52

P(even) = 0.48

(0.48 + 0.52) * 100

1 * 100

= 100 pages

(Number of even pages / total pages) * 100 = 0.48

x/2 * 1/x * 100 = 0.48

200

Positive Multiples of 6 up to 500 :

6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150, 156, 162, 168, 174, 180, 186, 192, 198, 204, 210, 216, 222, 228, 234, 240, 246, 252, 258, 264, 270, 276, 282, 288, 294, 300, 306, 312, 318, 324, 330, 336, 342, 348, 354, 360, 366, 372, 378, 384, 390, 396, 402, 408, 414, 420, 426, 432, 438, 444, 450, 456, 462, 468, 474, 480, 486, 492, 498.

Sum of the multiples = 20196

Unit digit of the sum = 6

agree

step-by-step explanation:

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10