Blake had 6 times the amount of DVDs that Daniel had. Blake bought 5 more. Write and solve an equation to find how many DVDs Daniel had if Blake now has 155.
6x + 5 = 155, x = 25 DVDs
200
Solve and graph on a number line. 4 > or equal to 6 + n
n < or equal to -2
200
9 - 2c < 55
c > -23
300
n - 1 = -3
n = -2
300
A taxicab company charges $2 plus $1.25 for each mile of a trip. Write and solve an equation to find the number of miles if the trip costs $12.
2 + 1.25m = 12, m = 8 miles
300
Solve and graph on a number line. x + 3/4 > 5
x > 4 1/4
300
-7 < x/10 - 12
x > 50
400
b + 1/2 = 3/4
b = 1/4
400
-2 = 2/5m
m = -5
400
The Berk family camped for 6 nights and paid a total of $89. Their cost, which includes an admission fee of $5 and the cost per night d. Write and solve an equation to find the cost per night.
6d + 5 = 89, d = $14 per night
400
Solve and graph on a number line. -42 < or equal to 6y
y > or equal to -7
400
Kelly has $25 in her savings account. She earns a $10 allowance each week. Write and solve an equation to determine how many weeks she must save her allowance to have at least $80 in her account. Explain your solution.
25 + 10w > or equal to 80, w > or equal to 5.5 Kelly must save for 6 weeks or more
500
m - 5/7 = 20/21
m = 1 2/3
500
0.42y = 1.26
y = 3
500
Rita earned $7.50 per hour babysitting. She spent $16 of the total amount that she earned this week on a new CD and had $29 left over. Write and solve an equation to find out how many hours she babysat this week
7.50h - 16 = 29, h = 6 hours
500
Solve and graph on a number line. -0.9g> 6.3
g < -7
500
The quotient of a number and -5 increased by one is at most 7.