Can someone please answer this question please answer it correctly and please show work please help please help I need it

20. 8% increase = 108% total

2,550 × 1.08 = 2,754

D. 2,754 square feet

21. 25% off + 10% off = 65% total

239.99 × 0.65 = 155.9935

A. $156

22. Adding a negative number is the same as just subtracting.

D. 14 + (-9)

23. C. There is a change in temperature from -3°F to 3°F

24. C = pi × d

C = pi × 8

C = 25.1327

B. 25.1 units

25. 20 ÷ 4 = 5 pages per hour

25 ÷ 5 = 5 pph

D. Yes, because 20/4 = 25/5

26. A = Pi × r^2

9 ÷ 2 = 4.5

4.5^2 = 20.25

C. 20.25pi square inches

27. 100 ÷ 5 = 20

A. m = 20n

30. 250 + 20 - 270 = 0

A. Deposit $20 in the first week and withdraw $270 in the second week

31. 7.44 ÷ 24 = 0.31

A. C = 0.31b

32. -3(-6b + 5)

-3(-6b) + -3(5)

18b + (-15)

D. 18b - 15

33. -13.74 × 4 = -54.96

A. -54.96 feet

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.