Final Exam Review

What is the form for a slope-intercept linear equation?

• y - y1 = m(x - x1)

• y = mx + b

• y = ab^x

• Ax + By = C

What is the form for an exponential equation?

• y - y1 = m(x - x1)

• y = mx + b

• y = ab^x

• Ax + By = C

An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person's system decreases by 29%. What is decay rate of this context?

• 29

• 0.29

• 71

• 0.71

An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person's system decreases by 29%. What is the amount of ibuprofen left in the bloodstream after 1 hour?

• 284 mg

• 300 mg

• 400 mg

• 200 mg

What is the explicit equation relating the number of hours to the amount of ibuprofen in the bloodstream if the initial amount is 400 mg and it decreases by 29% each hour?

• y = 400 * 0.71^x

• y = 400 * 0.29^x

• y = 400 * 1.29^x

• y = 400 * 0.71x

Create a graph that represents the situation where the amount of ibuprofen in the bloodstream decreases by 29% each hour starting from 400 mg.

• A graph showing a linear decrease

• A graph showing an exponential decrease

• A graph showing a constant value

• A graph showing an exponential increase

How much ibuprofen is left in an adult's bloodstream after 6 hours?

• 84 mg

• 100 mg

• 51 mg

• 200 mg

Is the context of the ibuprofen amount in the bloodstream discrete or continuous?

• Discrete

• Continuous

• Both discrete and continuous

• Neither discrete nor continuous

A school club wants to order customized hats. For their design, Hats Inc will charge $20 as a setup fee and $5.00 for each hat. Its competitor, Hat Company, will charge $30 setup fee and $4.00 for each hat. What is the equation that represents the cost for Hats Inc?

• y = 20 + 5x

• y = 5 + 20x

• y = 30 + 4x

• y = 4 + 30x

A school club wants to order customized hats. For their design, Hats Inc will charge $20 as a setup fee and $5.00 for each hat. Its competitor, Hat Company, will charge $30 setup fee and $4.00 for each hat. What is the equation that represents the cost for Hat Company?

• y = 20 + 5x

• y = 5 + 20x

• y = 30 + 4x

• y = 4 + 30x