algebra

solve x

100

4x−7(2−x)=3x+2

x = 1

200

2(x+3)−10=6(32−3x)

x = 78/5

300

4−2x/3=3/4−5x/6

x = 11/3

400

How long do elephant pregnancies last?

22 months

500

James is X years older than Alex. Alex is X years older than Kim. James is twice as old as Kim. Alex is 24. Which of the following ages is possible for James?

x = 32 

word problems

100

A widget is being sold in a store for $135.40 and has been marked up 7%. How much did the store pay for the widget?

p=126.5421

200

A store is having a 30% off sale and one item is now being sold for $9.95. What was the original price of the item?

p=14.2143

300

Two planes start out 2800 km apart and move towards each other meeting after 3.5 hours. One plane flies at 75 km/hour slower than the other plane. What was the speed of each plane?

r=437.5

400

Mike starts out 35 feet in front of Kim and they both start moving towards the right at the same time. Mike moves at 2 ft/sec while Kim moves at 3.4 ft/sec. How long will it take for Kim to catch up with Mike?

t=25

500

What was the first feature-length animated movie ever released?

Snow White and the Seven Dwarfs

Quadratic Equations

100

u2−5u−14=0

u=−2 and u=7

200

x2+15x=−50

x=−5 and x=−1

300

y2=11y−28

y=4 and y=7

400

19x=7−6x2

x=1/3 and x=−7/2

500

6w2−w=5

w=−5/6 and w=1

Equations With Radicals

100

2x=√x+3

x = 1

200

√33−2x=x+1

x = 4

300

7=√39+3x−x

x = -1

400

x=1+√2x−2

x=1 and x=3

500

What is "cynophobia"?

Fear of dogs

Linear Inequalities

100

4(z+2)−1>5−7(4−z)

z<10

200

−1<4x+2<10

(−34,2)

300

What does come down but never goes up?

Rain

400

0≤10w−15≤23

(3/2,19/5)

500

If 0≤x<3 determine a and b for the inequality : a≤4x+1<b

a=1 and b=13