Day 4 CAASPP Spiral Review

A school club sells tickets to an event. Student tickets cost $5 and adult tickets cost $12. The club sells 40 student tickets and 25 adult tickets.

Which equation represents the total revenue, R, collected?

• R = 5x + 12y

• R = 40x + 25y

• R = 5(40) + 12(25)

• R = 40(12) + 25(5)

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Solve the quadratic equation by factoring: x² - 10x + 21 = 0

• x = 3, 7

• x = 2, 8

• x = 1, 9

• x = 4, 6

Tags

CCSS.HSA-REI.B.4B

A population of bacteria doubles every 5 hours. Initially, there are 200 bacteria. Which equation models the population, P, after t hours?

• P = 200 + 5t

Tags

CCSS.HSF.LE.A.2

• Growth

• Decay

A student has $50 and saves $8 per week. How many weeks, w, will it take to save at least $130?

• 50 + 8w ≥ 130

• 50 - 8w ≥ 130

• 8w ≥ 130

• 50 + 8 ≥ 130w

Tags

CCSS.7.EE.B.4B

Consider the equation modeling compound interest: A = P(1 + r/n)^(nt).

Enter an equation for an investment where A = $3000, P = $1000, r is unknown, t = 6 years, and n = 2 times per year.

The half-life of a substance is 4 hours. If the initial mass is 100g, how much remains after 12 hours?

• 12.5g

• 25g

• 50g

• 75g

Tags

CCSS.HSF.LE.A.4

• x = 3, -1

• x = 1 + √7, 1 - √7

• x = -1, 3

• x = 2, -3

Tags

CCSS.HSA-REI.B.4B

• Growth

• Decay

A patient takes a medication with a half-life of 3 hours. If the initial dose is 600 mg, how many hours will it take for the medication to reduce to 75 mg?

• 9 hours

• 12 hours

• 6 hours

• 15 hours

Tags

CCSS.HSF.LE.A.4