TE-21 Review

What is the value of x in the equation -30x + 855 = -345

• -40

• -17

• 17

• 40

• 
• 
• 
• 

The amount of money an accountant makes, 𝒎, for working 𝒉 hours can be represented by the equation 𝒎 = 𝟐𝟗.𝟒𝒉. What is the constant of proportionality of the equation?

• 7.35

• 14.7

• 29.4

• 58.8

Gabrielle and Rob each earn $𝟐𝟐 an hour, and each works 𝟒𝟎 hours this week. . Gabrielle buys a train ticket for $𝟐𝟏𝟓. 𝟖𝟎 and 𝟐 suitcases that cost $𝟑𝟔. 𝟓𝟎 each with her earnings this week. Which statement is true?

• Gabrielle has $591.20 of her earnings left over because 40(22) − 215.8 − (2 × 36.5) is equal to 591.2.

• Gabrielle has $625.70 of her earnings left over because 40(22) − 215.8 − 2 − 36.5 is equal to 625.7.

• Gabrielle has $375.40 of her earnings left over because 40(22) − (2 × 215.80) − (2 × 36.50) is equal to 375.4

• Gabrielle has $411.90 of her earnings left over because 40(22) − (2 × 215.80) − 36.50 is equal to 411.9.

Gabrielle and Rob each earn $𝟐𝟐 an hour, and each works 𝟒𝟎 hours this week. Rob spends 𝟏/𝟐 of his earnings this week on bills and then buys a video game for $𝟐𝟓. 𝟕𝟓. How much of his earnings from this week does Rob have left?

• $5.25

• $34.25

• $414.25

• $853.75

A gas pump fills gas into a flying hot air balloon at a constant rate. The table shows the relationship between the total number of gallons of gas, 𝒚, a hot air balloon uses flying for 𝒙 hours.

• y = 3x

• y = 6x

• y = 30x

• y = 60x

Which expression is equivalent to -18x - 14?

• −2(−9𝑥 − 7)

• −2(9𝑥 + 7)

• 2(−9𝑥 + 7)

• 2(9𝑥 − 7)

Consider the information about the number of customers that select various frame colors at a frame store one day.

• 𝟏𝟓 customers select white frames.

• 𝟑𝟎 customers select black frames.

• 𝟒𝟓 customers select gold frames.

If there are a total of 2,200 customers that order from the frame store one month, what is the best approximation for how many customer that month select a black frame?

• 367 customers

• 733 customers

• 1,100 customers

• 1,467 customers

The regular price of an item is 𝒔 dollars. If the item is on sale for 𝟐𝟓% off the regular price, which two expressions represent the sale price, in dollars, of the item?

• 0.25s

• 0.75s

• 1.25s

• s - 0.25s

• s + 0.25s

A magician completely fills a container in the shape of a right rectangular prism with water for a magic trick. How much water does the magician use to fill the container completely?

• 157 cubic feet

• 130 cubic feet

• 52.33 cubic feet

• 43.3 cubic feet