Exponents
200 = ?
1
400 has how many significant digits?
1
Solve for x.
2x + 3 = 15
x = 6
Solve for b.
3b - 4 = b + 2
b = 3
Five friends equally split a restaurant bill that comes to $32.50. How much does each friend pay?
Each friend pays $6.50
52 x 56 = ?
58
39.20 has how many significant digits?
4
Solve for a.
(1/2)a + 5 = 18
a = 26
Solve for x.
5x + 2 = 2x + 14
x = 4
You work for 4 hours on Saturday and 8 hours on Sunday. You receive a $50 bonus. You earn $164.00 total. How much did you earn per hour?
You earned $9.50 per hour.
493/2 = ?
343
206,320 has how many significant digits?
6
Solve for t.
-t + 8 = 3
t = 5
Solve for p.
1.5p = 1.25p + 8
p = 32
Two buildings have the same total height. One building has 8 floors with height, h. The other building has a ground floor of 16ft and 6 other floors with height, h. Write and solve an equation to find the height, h, of these floors.
8h = 16 + 6h
h = 8
85/3 = ?
32
0.00047 has how many significant digits?
2
Solve for x.
3(x - 7) = -12
x = 3
Solve for x.
2(5x - 1) = 3(x + 11)
x = 5
Online concert tickets cost $37 each, plus a service charge of $8.50 per ticket. The Web site also charges a transaction fee of $14.99 for the purchase. You paid $242.49. How many tickets did you buy?
You bought 5 tickets.
(9x2y8)3/2 = ?
27x3y12
34.002 has how many significant digits?
5
Solve for x.
-24 = -10x + 3
x = 2.7
Solve for m.
9m - 4 = -3m + 5 + 3
m = 1
Pristine Printing will print business cards for $0.10 each plus a setup charge of $15. The Printing Place offers business cards for $0.15 each with a setup charge of $10. What number of business cards costs the same from either printer? BONUS: What would the cost be?
0.10n + 15 = 0.15n + 10
0.10n - 0.10n + 15 = 0.15n - 0.10n +10
15 = 0.05n + 10
15 - 10 = 0.05n + 10 - 10
5 = 0.05n
5/0.05 = 0.05n/0.05
100 = n ~~~>100 cards