SOLVING EQUATIONS HELP!!!?

Is the equation true, false, or open? Explain.

9p + 8 = 10p + 7)

• Open, there is a variable.

• True, the expressions are the same for all values of the variables.

• False, the expressions are never the same.

Is x = 1 a solution of the equation 2 – 8x = –6?

• yes

• no

• 0.21 cm

• 20.74 cm

• 0.324 cm

• 32.40 cm

A souvenir maker wants to create a scale model of the Empire State Building. The Empire State Building is 1,472 feet tall and has a base with dimensions 286 ft by 286 ft. If the model is 6 in. tall, what are the approximate dimensions of its base in inches? (Round your answer to the nearest tenth of an inch.) (1 point)

• 1.2 in. by 1.2 in.

• 1 in. by 1 in.

• 0.2 in. by 0.2 in.

• 2.3 in. by 2.3 in.

Is (3, 13) a solution of the equation y = 4x?

• yes

• no

Which ordered pair is a solution of the equation y = 3x?

• (–2, –9)

• (–8, –18)

• (–8, –3)

• (–10, –30)

Which ordered pair is a solution of the equation y = –9x + 4?

• (10, –86)

• (–4, –58)

• (6, –41)

• (–6, 57)

For questions 9–13, solve the equation.

–4 = g + 1)

• g = –4

• g = 4

• g = –5

• g = –3

.

w – 2 = –3)

• w = –

• w = –5

• w = –1

• w = 6

2.8 = 2y

• y = 1.4

• y =

• y = 2.8

• y = 0.6

–9 =

• n = –

• n = –

• n = –

• n = –

Which equation is an identity?

• 11 – (2v + 3) = –2v – 8

• 5w + 8 – w = 6w – 2(w – 4)

• 7m – 2 = 8m + 4 – m

• 8y + 9 = 8y – 3

Which equation has no solution?

• 8 – (5v + 3) = 5v – 5

• 3m – 6 = 5m + 7 – m

• 3w + 4 – w = 5w – 2(w – 2)

• 7y + 9 = 7y – 6

2(h – 8) – h = h – 16 (1 point)

• h = 8

• h = –8

• h = infinitely many solutions

• h = no solution

3 + 6z = 13 + 6z

• z = –

• z = 2

• z = infinitely many solutions

• z = no solution

Angela and Neil are going to the movies. They each bought a medium popcorn, and Neil got a small soft drink. Angela had a $5 gift certificate to put toward the cost, and Neil paid the rest, which came to $27.90. A movie ticket costs $10.00, and a medium popcorn costs $5.50. How much does a soft drink cost at the theater? (1 point)

• $1.90

• $7.40

• $2.90

• $17.40

For questions 19–21, solve the equation.

3(y – 5) + 2 = 5

• y = 4

• y = 7

• y = –4

• y = 6

70 = –7(–2 – 2z)

• z = 4

• z = –28

• z = –112

• z = 784

–6p + 7 = 3(2p – 3) – 4(–10 + 4p)

• p = 6

• p = 5

• p = 7

• p = 12