TR STAAR Algebra 1 Blitz: Tool - Mental Math, Formula Chart & Mi

A shipping company started with 40 employees. The number of employees at the shopping company increases at a rate of 7.5% each year.

Which function can be used to model the number of employees, f(x), at the shipping company after x years.

A sample of a substance with an initial mass of 963 grams is decaying at a rate of 27% per hours.

Create a function that can be used to find y, the mass of the substance in grams remaining after x hours.

Record your answer in the space provided. ​

f(x) = (a)   (​ (b)   )^x

• 963
• 0.73
• 0.27
• 1.27
• 1.73

• 5
• 14
• 8
• -16
• 18
• 6

e

f

+7

+2

+1

-1

-7

+5

+12

-5

• -3, 2, 7, 12

• 5, 2, -1, -4

• -3, -15, -75, -375

• 5, 8, 11, 14

Indicate whether the statement is an example of association, causation, both association and causation, or neither association nor causation.

Statement: As the outside temperature in degrees Celsius increases, the number of minutes it takes for a bowl of ice-cream to melt decreases. ​ ​ ​ (a)  

• Both Association and Causation
• Association Only
• Causation Only
• Neither Association nor Causation

Indicate whether the statement is an example of association, causation, both association and causation, or neither association nor causation.

Statement: As the sales of winter coats increases, the outside temperature decreases. ​ ​ ​ ​ (a)  

• Causation Only
• Neither Association nor Causation
• Association Only
• Both Association and Causation