please help and show your work

Question

Which of the following expressions is equivalent to 20 - 3(x + 2)? *

17x - 34

3x + 14

-9x + 42

-3x + 14

The model shown represents the equation 2x + 6 = 6y + 8. What is the value of x? *

x = 6y + 14

x = 3y + 4

x = 6y + 2

x = 3y + 1

The chart above shows the price of several different brands and sizes of bags of tortilla chips. Which items are sold at the same rate? *

2 and 3

1 and 4

Each item is sold at a different rate.

1 and 2

An architect's model of a building uses the scale of 1 inch = 2 1/2 feet. If the height of the model is 20 inches, how tall will the actual building be? *

22.5 feet

50 feet

42 feet

8 feet

Jack's age is 3 more than twice Gwen's age. Which expression represents Jack's age if Gwen's age is expressed as g? *

3(g − 2)

2(g − 3)

2g + 3

3(2g)

A town's population is 20,439. 4,872 of the people are members of the local country club. About what percent of the town's population are members of the country club? *

15%

5%

50%

25%

Answer 1

-3x+14 is equivalent to 20-3(x+2)

x=1 in the scale model of 2x+6 = 6y + 8

that equation is the same as

x =3y +1

for the chips, each is sold at a different rate. divide cost by ounces. they're all different, but close

2 1/2: 1 X:20

(5/2)/1 = X/20, solve for X

X= 50 feet 2 1/2 times 20 = 50

2g+3 is 3 more than twice g's age

about 25% belong, actually closer to 24%