Solving 1
38=2a+54
a=−8
Concert tickets cost $25 each plus $3 service charge. Total = $252. How many tickets?
9 tickets
4y+15=6y−11
y=13
A value increased from $5000 to $6500. What is the percent increase?
30%
Convert 12 in. to centimeters
30.48 cm
t+18.1=23.9
t=5.8
Gym A: $25/month + $125 fee. Gym B: $30/month + $50 fee. After how many months same cost?
After 15 months
25h+40=−15h−80
h=−3
Weight dropped from 150 lb to 135 lb. Percent change?
10% decrease.
Convert 528 cm to yards
5.77 yd
9−3r=14
r=−5/3
A new pizza shop has $2500 to print menus. Each menu costs $0.50. How many menus?
5000 menus
11.5x+7+3x=−8+3x
x=−1
A student says going from 1000 to 1500 is 150% increase. What is correct?
50% increase
Convert 9 hours to minutes
540 min
(c+3)/5 =15
c=72
You paid $600 for a guitar. It was $40 more than your friend’s. How much was your friend’s?
$560
−8t−3t+2=−5t−6t
No solution
Convert 29(1/2) oz to 23(1/42) oz. What is the percent change?
21%
A 20 feet of copper piping needs to be replaced. How many meters should be purchased?
6.1 m
x=-2
Farming: You have 100 ft of fencing to build a circular pen. What’s the area of the largest pen?
Diameter ≈ 31.8 ft, Area ≈ 795 ft²
5(5.25+3.1x)=−6.2(2.5x+1.9)
No solution
The perimeter of a rectangle is measured as 15 cm by 21 cm. Find the greatest percent error.
3%
A cyclist is riding 18 miles per hour. How many feet per second is this?
26.4 ft/s