4.1-4.2 Quiz Review

Square Root Equations

100

Solve:

sqrt(3x+12)=6

8

200

sqrt(1-x)=7

x=-48

300

sqrt(8x-47)-2=-1

x=6

Quadratic Equations

100

-5x^2+9=14

No Solution

200

(x+6)^2=25

x=-1,-11

300

4(x+5)^2+2=326

x=4,-14

400

HINT:  Leave your answer as a square root!

16+2x^2=30

+-sqrt7

Linear Equations

100

3x-1=-2x+39

x=8

200

-5(-3x-3)+5x+4=-1

x=-1

Absolute Value Equations

100

14=|x+24|

x=-10,-38

200

38=|10-4y|

x=-7,12

300

|-4x+15|=35

x=-5,12.5

Word Problems

100

Eva buys ice cream and apples at the store.

-She pays a total of $55.68

-Ice cream is $6.80

-She buys 8 bags of apples that each cost the same amount.

How much does each bag of apples cost?

$6.11

200

A group of friends want to go the amusement park.  They have $143.25 to spend on parking and admission.  Parking is $11.25, and tickets cost $22 per person.  How many people can go?

6

300

Under her cell phone plan, Morgan pays a flat cost of $55.50 per month and $4 per gig of data.  She wants to keep her bill at $71.90 per month.  How  many gigs of data can she use while staying within her budget.

4.1 gigs